List of publications
2021
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A. Philippi-Kobs, L. Müller, M.H. Berntsen, W. Roseker, M. Riepp, K. Bagschik, J. Wagner, R. Frömter, M. Danailov, F. Capotondi, E. Pedersoli, M. Manfredda, M. Kiskinova, M. Stransky, V. Lipp, A. Scherz, B. Ziaja, H.P. Oepen, G. Grübel
Ultrafast Demagnetization Excited by Extreme Ultraviolet Light From a Free-Electron Laser
submitted, (2021).
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C. Nweze, T.E. Glier, S. Scheitz, L. Westphal, F. Biebl, S. Buchenau, L.O. Akinsinde, N. Kohlmann, L. Kienle, I. González Díaz-Placio, R. Frömter, R. Zierold, R. Blick, N. Huse, and M. Rübhausen
Quantum Confinement of the Spin-Berry Phase on 1D topological surfaces of single Bi2Se3 nanowires
submitted, (2021).
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T. Anlauf, M. Prada, S. Freercks, B. Bosnjak, R. Frömter, J. Sichau, H.P. Oepen, L. Tiemann, and R.H. Blick
Polarization amplification by spin-doping in nanomagnetic/graphene hybrid systems
Phys. Rev. Materials 5, 034006, (2021).
2020
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K. Bagschik, M. Schneider, J. Wagner, R. Buß, M. Riepp, A. Philippi-Kobs, L. Müller, W. Roseker, F. Trinter, M. Hoesch, J. Viefhaus, S. Eisebitt, G. Grübel, H.P. Oepen, and R. Frömter
Enabling time-resolved 2D spatial-coherence measurements using the Fourier-analysis method with an integrated curved-grating beam monitor
Opt. Lett. 45, 5591, (2020).
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K. Bagschik, J. Wagner, R. Buß, M. Riepp, A. Philippi-Kobs, L. Müller, J. Buck, F. Trinter, F. Scholz, J. Seltmann, M. Hoesch, J. Viefhaus, G. Grübel, H.P. Oepen, and R. Frömter
Direct 2D spatial-coherence determination using the Fourier-analysis method: Multi-parameter characterization of the P04 beamline at PETRA III
Opt. Express 28, 7282, (2020).
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M.J. Meijer, J. Lucassen, O. Kurnosikov, H.J.M. Swagten, B. Koopmans, R. Lavrijsen, F. Kloodt-Twesten, R. Frömter, and R.A. Duine
Magnetic chirality controlled by the interlayer exchange interaction
Phys. Rev. Lett. 124, 207203, (2020).
2019
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M. Riepp, L. Müller, A. Philippi-Kobs, W. Roseker, R. Rysov, K. Bagschik, M. Walther, T. Golz N. Stojanovic, G. Grübel, R. Frömter, H.P. Oepen, D. Naumenko, E. Pedersoli, F. Capotondi, and M. Kiskinova
Ultrafast magnetization dynamics at the low-fluence limit supported by external magnetic fields
Proceedings of the 39th International Free-Electron Laser Conference, 574, (2019).
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J. Lucassen, M.J. Meijer, O. Kurnosikov, H.J.M. Swagten, B. Koopmans, R. Lavrijsen, F. Kloodt-Twesten, R. Frömter, R.A. Duine
Tuning magnetic chirality by dipolar interactions
Phys. Rev. Lett. 123, 157201, (2019).
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F. Kloodt-Twesten, S. Kuhrau, H.P. Oepen, and R. Frömter
Measuring the Dzyaloshinskii-Moriya interaction of the epitaxial Co/Ir(111) interface
Phys. Rev. B 100, 100402(R), (2019).
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A. Philippi-Kobs, A. Farhadi, L. Matheis, D. Lott, A. Chuvilin, and H.P. Oepen
Impact of Symmetry on Anisotropic Magnetoresistance in Textured Ferromagnetic Thin Films
Phys. Rev. Lett. 123, 137201, (2019).
2018
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R. Frömter, E.C. Corredor, S. Hankemeier, F. Kloodt-Twesten, S. Kuhrau, F. Lofink, S. Rößler, and H.P. Oepen
Imaging the Interaction of Electrical Currents with Magnetization Distributions
in "Atomic- and Nanoscale Magnetism" ed. R. Wiesendanger, pp 343-358, Springer, Cham, (2018).
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S. Freercks, S. Hesse, A. Neumann, P. Staeck, C. Thönnißen, E.-S. Wilhelm, and H.P. Oepen
Magnetic Behavior of Single Nanostructures and their Mutual Interactions in Small Ensembles
in "Atomic- and Nanoscale Magnetism" ed. R. Wiesendanger, pp 249-265, Springer, Cham, (2018).
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S. Kuhrau, F. Kloodt-Twesten, Ch. Heyn, H.P. Oepen, and R. Frömter
Cap-layer-dependent oxidation of ultrathin cobalt films and its effect on the magnetic contrast in scanning electron microscopy with polarization analysis
Appl. Phys. Lett. 113, 172403, (2018).
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L. Müller, G. Hartmann, S. Schleitzer, M.H. Berntsen, M. Walther, R. Rysov, W. Roseker, F. Scholz, J. Seltmann, L. Glaser, J. Viefhaus, K. Mertens, K. Bagschik, R. Frömter, A. De Fanis, I. Shevchuk, K. Medjanik, G. Öhrwall, H.P. Oepen, M. Martins, M. Meyer, and G. Grübel
Note: Soft X-ray Transmission Polarizer Based on Ferromagnetic Thin Films
Rev. Sci. Instrum. 89, 036103, (2018).
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F. Kloodt-Twesten, S. Kuhrau, P. Staeck, D.R. Cavicchia, F. Lofink, H.P. Oepen, and R. Frömter
Coupling between vortices and antivortices in a cross-tie wall studied by time-resolved SEMPA
Phys. Rev. B 97, 024426, (2018).
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M. Stier, A. Neumann, A. Philippi-Kobs, H.P. Oepen, and M. Thorwart
Implications of a temperature-dependent magnetic anisotropy for superparamagnetic switching
J. Magn. Magn. Mater. 447, 96, (2018).
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R. Schneider, T. Mehringer, G. Mercurio, L. Wenthaus, A. Classen, G.N. Brenner, O. Gorobtsov, A. Benz, D. Bhatti, L. Bocklage, B. Fischer, S. Lazarev, Y. Obukhov, K. Schlage, P. Skopintsev, J. Wagner, F. Waldmann, S. Willing, I. Zaluzhnyy, W. Wurth, I.A. Vartanyants, R. Röhlsberger, and J. Von Zanthier
Quantum imaging with incoherently scattered light from a free-electron laser
Nature Phys. 14, 126, (2018).
2017
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J. Lucassen, F. Kloodt-Twesten, R. Frömter, H.P. Oepen, R.A. Duine, H.J.M. Swagten, B. Koopmans, and R. Lavrijsen
Scanning electron microscopy with polarization analysis for multilayered chiral spin textures
Appl. Phys. Lett. 111, 132403, (2017).
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E.C. Corredor, S. Kuhrau, F. Kloodt-Twesten, R. Frömter, and H.P. Oepen
SEMPA investigation of the Dzyaloshinskii-Moriya interaction in the single, ideally grown Co/Pt(111) interface
Phys. Rev. B 96, 060410(R), (2017).
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F. Lofink, A. Philippi-Kobs, M.R. Rahbar Azad, S. Hankemeier, G. Hoffmann, R. Frömter, and H.P. Oepen
Domain walls in bent nanowires
Phys. Rev. Applied 8, 024008, (2017).
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J. Kimling, A. Philippi-Kobs, J. Jacobsohn, H.P. Oepen, and D.G. Cahill
Thermal conductance of interfaces with amorphous SiO2 measured by time-resolved magneto-optic Kerr-effect thermometry
Phys. Rev. B 95, 184305, (2017).
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M. Seifert, L. Schultz, R. Schäfer, S. Hankemeier, R. Frömter, H.P. Oepen, and V. Neu
Micromagnetic investigation of domain and domain wall evolution through the spin-reorientation transition of an epitaxial NdCo5 film
New J. Phys. 19, 033002, (2017).
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A. Meyer, N. Franz, H.P. Oepen, J. Perlich, G. Carbone, and T.H. Metzger
In situ grazing-incidence small-angle X-ray scattering observation of block-copolymer templated formation of magnetic nanodot arrays and their magnetic properties
Nano Res. 10, 456, (2017).
2016
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K. Bagschik, R. Frömter, J. Bach, B. Beyersdorff, L. Müller, S. Schleitzer, M.H. Berntsen, C. Weier, R. Adam, J. Viefhaus, C.M. Schneider, G. Grübel, and H.P. Oepen
Employing soft x-ray resonant magnetic scattering to study domain sizes and anisotropy in Co/Pd multilayers
Phys. Rev. B 94, 134413, (2016).
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A. Neumann, A. Frauen, J. Vollmers, A. Meyer, and H.P. Oepen
Structure-induced spin reorientation in magnetic nanostructures
Phys. Rev. B 94, 094430, (2016).
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K. Bagschik, R. Frömter, L. Müller, W. Roseker, J. Bach, P. Staeck, C. Thönnißen, S. Schleitzer, M.H. Berntsen, C. Weier, R. Adam, J. Viefhaus, C.M. Schneider, G. Grübel, and H.P. Oepen
Spatial coherence determination from the Fourier analysis of a resonant soft X-ray magnetic speckle pattern
Opt. Express 24, 23162, (2016).
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R. A. Griffiths, P. W. Nutter, A. Neumann, C. Thönnißen, E.-S. Wilhelm, and T. Thomson
Signal asymmetries in the anomalous Hall effect of bilayer magnetic nanostructures
Appl. Phys. Lett. 109, 132401, (2016).
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A. Gaul, S. Hankemeier, D. Holzinger, N.D. Müglich, P. Staeck, R. Frömter, H.P. Oepen, and A. Ehresmann
Engineered magnetic domain textures in exchange bias bilayer systems
J. Appl. Phys. 120, 033902, (2016).
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F. Klein, U. Treske, A. Koitzsch, D.R. Cavicchia, C. Thönnißen, R. Frömter, T. Roch, and T. Mühl
Nanoscale scanning electron microscopy based graphitization in tetrahedral amorphous carbon thin films
Carbon 107, 536, (2016).
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R. Frömter, F. Kloodt, S. Rößler, A. Frauen, P. Staeck, D.R. Cavicchia, L. Bocklage, V. Röbisch, E. Quandt, and H.P. Oepen
Time-resolved scanning electron microscopy with polarization analysis
Appl. Phys. Lett. 108, 142401, (2016).
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A. Kobs and H.P. Oepen
Disentangling interface and bulk contributions to the anisotropic magnetoresistance in Pt/Co/Pt sandwiches
Phys. Rev. B 93, 014426, (2016).
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X.D. Tao, H.L. Wang, B.F. Miao, L. Sun, B. You, D. Wu, W. Zhang, H.P. Oepen, J.H. Zhao, and H.F. Ding
Unveiling the Mechanism for the Split Hysteresis Loop in Epitaxial Co2Fe1-xMnxAl Full-Heusler Alloy Films
Sci. Rep. 6, 18615, (2016).
2015
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A. Berger, R. Alcaraz de la Osa, A.K. Suszka, M. Pancaldi, J.M. Saiz, F. Moreno, H.P. Oepen, and P. Vavassori
Enhanced Magneto-Optical Edge Excitation in Nanoscale Magnetic Disks
Phys. Rev. Lett. 115, 187403, (2015).
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A. Frauen, A. Kobs, T. Böhnert, A. Michel, G. Winkler, K. Nielsch, and H. P. Oepen
Magnetothermoelectric power in Co/Pt layered structures: Interface versus bulk contributions
Phys. Rev. B 92, 140402(R), (2015).
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A. Casiraghi, T. Rincón Domínguez, S. Rößler, K.J.A. Franke, D. López González, S.J. Hämäläinen, R. Frömter, H.P. Oepen, and S. van Dijken
Influence of elastically pinned magnetic domain walls on magnetization reversal in multiferroic heterostructures
Phys. Rev. B 92, 054406, (2015).
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G. Winkler, A. Kobs, A. Chuvilin, D. Lott, A. Schreyer, and H.P. Oepen
On the variation of magnetic anisotropy in Co/Pt(111) on silicon oxide
J. Appl. Phys. 117, 105306, (2015).
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C. Weier, R. Adam, D. Rudolf, R. Frömter, P. Grychtol, G. Winkler, A. Kobs, H.P. Oepen, H.C. Kapteyn, M.M. Murnane, and C.M. Schneider
Femtosecond-laser-induced modifications in Co/Pt multilayers studied with tabletop resonant magnetic scattering
Europhys. Lett. 109, 17001, (2015).
2014
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E.C. Corredor, J.I. Arnaudas, M. Ciria, F. Lofink, S. Rößler, R. Frömter, and H.P. Oepen
Strain-induced spin reorientation of bcc-like iron films grown on Cu(001)
Phys. Rev. B 90, 184410, (2014).
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D. Wilson, D. Rudolf, C. Weier, R. Adam, G. Winkler, R. Frömter, S. Danylyuk, K. Bergmann, D. Grützmacher, C.M. Schneider, and L. Juschkin
Generation of circularly polarized radiation from a compact plasma-based extreme ultraviolet light source for tabletop X-ray magnetic circular dichroism studies
Rev. Sci. Instrum. 85, 103110, (2014).
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A. Neumann, D. Altwein, C. Thönnißen, R. Wieser, A. Berger, A. Meyer, E. Vedmedenko, and H.P. Oepen
Influence of long-range interactions on the switching behavior of particles in an array of ferromagnetic nanostructures
New J. Phys. 16, 083012, (2014).
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A. Kobs, A. Frauen, and H.P. Oepen
Comment on "Hybrid magnetoresistance in the proximity of a ferromagnet"
Phys. Rev. B 90, 016401, (2014).
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M.R. Rahbar Azad, A. Kobs, B. Beyersdorff, P. Staeck, G. Hoffmann, R. Frömter, and H.P. Oepen
Magnetostatic interaction of permalloy rectangles exhibiting a Landau state investigated by magnetotransport of single rectangles
Phys. Rev. B 90, 014404, (2014).
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S. Rößler, S. Hankemeier, B. Krüger, F. Balhorn, R. Frömter, and H.P. Oepen
Nonadiabatic spin-transfer torque of magnetic vortex structures in a permalloy square
Phys. Rev. B 89, 174426, (2014).
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P. Skopintsev, A. Singer, J. Bach, L. Müller, B. Beyersdorff, S. Schleitzer, O. Gorobtsov, A. Shabalin, R.P. Kurta, D. Dzhigaev, O.M. Yefanov, L. Glaser, A. Sakdinawat, Y. Liu, G. Grübel, R. Frömter, H.P. Oepen, J. Viefhaus, and I.A. Vartanyants
Characterization of spatial coherence of synchrotron radiation with non-redundant arrays of apertures
J. Synchrotron Rad. 21, 722, (2014).
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P. Wessels, J. Ewald, M. Wieland, T. Nisius, G. Abbati, S. Baumbach, J. Overbuschmann, A. Vogel, A. Neumann, J. Viefhaus, H.P. Oepen, G. Meier, T. Wilhein, and M. Drescher
Time-resolved soft X-ray microscopy of magnetic nanostructures at the P04 beamline at PETRA III
J. Phys.: Conf. Ser. 499, 012009, (2014).
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H.H. Langner, A. Vogel, B. Beyersdorff, M. Weigand, R. Frömter, H.P. Oepen, and G. Meier
Local modification of the magnetic vortex-core velocity by gallium implantation
J. Appl. Phys. 115, 103909, (2014).
2013
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P. Wessels, M. Schlie, M. Wieland, J. Ewald, G. Abbati, S. Baumbach, J. Overbuschmann, T. Nisius, A. Vogel, A. Neumann, A. Meents, J. Viefhaus, H.P. Oepen, G. Meier, T. Wilhein, and M. Drescher
XMCD microscopy with synchronized soft X-ray and laser pulses at PETRA III for time-resolved studies
J. Phys.: Conf. Ser. 463, 012023, (2013).
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J. Klinkhammer, D.F. Förster, S. Schumacher, H.P. Oepen, T. Michely, and C. Busse
Structure and magnetic properties of ultra thin textured EuO films on graphene
Appl. Phys. Lett. 103, 131601, (2013).
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L. Müller, S. Schleitzer, C. Gutt, B. Pfau, S. Schaffert, J. Geilhufe, C. von Korff Schmising, M. Schneider, C.M. Günther, F. Büttner, F. Capotondi, E. Pedersoli, S. Düsterer, H. Redlin, A. Al-Shemmary, R. Treusch, J. Bach, R. Frömter, B. Vodungbo, J. Gautier, P. Zeitoun, H. Popescu, V. Lopez-Flores, N. Beaulieu, F. Sirotti, N. Jaouen, G. Malinowski, B. Tudu, K. Li, J. Lüning, H.P. Oepen, M. Kiskinova, S. Eisebitt, and G. Grübel
Ultrafast Dynamics of Magnetic Domain Structures Probed by Coherent Free-Electron Laser Light
Synch. Rad. News 26, (6), 27, (2013).
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L. Müller, C. Gutt, B. Pfau, S. Schaffert, J. Geilhufe, F. Büttner, J. Mohanty, S. Flewett, R. Treusch, S. Düsterer, H. Redlin, A. Al-Shemmary, M. Hille, A. Kobs, R. Frömter, H.P. Oepen, B. Ziaja, N. Medvedev, S.K. Son, R. Thiele, R. Santra, B. Vodungbo, J. Lüning, S. Eisebitt, and G. Grübel
Breakdown of the X-Ray Resonant Magnetic Scattering Signal during Intense Pulses of Extreme Ultraviolet Free-Electron-Laser Radiation
Phys. Rev. Lett. 110, 234801, (2013).
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F. Capotondi, E. Pedersoli, N. Mahne, R.H. Menk, G. Passos, L. Raimondi, C. Svetina, G. Sandrin, M. Zangrando, M. Kiskinova, S. Bajt, M. Barthelmess, H. Fleckenstein, H.N. Chapman, J. Schulz, J. Bach, R. Frömter, S. Schleitzer, L. Müller, C. Gutt, and G. Grübel
Invited Article: Coherent imaging using seeded free-electron laser pulses with variable polarization: First results and research opportunities
Rev. Sci. Instrum. 84, 051301, (2013).
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J. Kimling, T. Gerhardt, A. Kobs, A. Vogel, S. Wintz, M.-Y. Im, P. Fischer, H.P. Oepen, U. Merkt, and G. Meier
Tuning of the nucleation field in nanowires with perpendicular magnetic anisotropy
J. Appl. Phys. 113, 163902, (2013).
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L. Müller, C. Gutt, S. Streit-Nierobisch, M. Walther, S. Schaffert, B. Pfau, J. Geilhufe, F. Büttner, S. Flewett, C.M. Günther, S. Eisebitt, A. Kobs, M. Hille, D. Stickler, R. Frömter, H.P. Oepen, J. Lüning, and G. Grübel
Endstation for ultrafast magnetic scattering experiments at the free-electron laser in Hamburg
Rev. Sci. Instrum. 84, 013906, (2013).
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J. Jelli, K. M. Lebecki, S. Hankemeier, R. Frömter, H.P. Oepen, and U. Nowak
Magnetic domain structure in coupled rectangular nanostructures
IEEE Trans. Magn. 49, 1077, (2013).
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A. Neumann, C. Thönnißen, A. Frauen, S. Heße, A. Meyer, and H.P. Oepen
Probing the Magnetic Behavior of Single Nanodots
Nano Lett. 13, 2199, (2013).
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M. Seifert, L. Schultz, R. Schäfer, V. Neu, S. Hankemeier, S. Rössler, R. Frömter, and H.P. Oepen
Domain evolution during the spin-reorientation transition in epitaxial NdCo5 thin films
New J. Phys. 15, 013019, (2013).
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M. Hille, A. Frauen, B. Beyersdorff, A. Kobs, S. Hesse, R. Frömter, and H.P. Oepen
Direct method for measuring the canting angle of magnetization
J. Appl. Phys. 113, 023902, (2013).
2012
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A. Kobs, S. Heße, H. P. Oepen, and P. Weinberger
Anisotropic Interface Magnetoresistances in Pt(111)/Con/Pt(111)
Philos. Mag. 92, 2835, (2012).
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B. Beyersdorff, S. Hankemeier, S. Rößler, Y. Stark, G. Hoffmann, R. Frömter, H.P. Oepen, and B. Krüger
Thermal effects in spin-torque assisted domain wall depinning
Phys. Rev. B 86, 184427, (2012).
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N. Franz, B. Güde, A. Meyer, T. Kipp, H.P. Oepen, and D.P.F. Möller
Implementation Of The Preisach Model in MATLAB
Proceedings of the 2012 Summer Computer Simulation Conference 2012, Simulation Series 44, (10), 9-14, (2012).
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B. Pfau, S. Schaffert, L. Müller, C. Gutt, A. Al-Shemmary, F. Büttner, R. Delaunay, S. Düsterer, S. Flewett, R. Frömter, J. Geilhufe, E. Guehrs, C.M. Günther, R. Hawaldar, M. Hille, N. Jaouen, A. Kobs, K. Li, J. Mohanty, H. Redlin, W.F. Schlotter, D. Stickler, R. Treusch, B. Vodungbo, M. Kläui, H.P. Oepen, J. Lüning, G. Grübel, and S. Eisebitt
Ultrafast optical demagnetization manipulates nanoscale spin structure in domain walls
Nat. Commun. 3, 1100, (2012).
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A. Neumann, N. Franz, G. Hoffmann, A. Meyer, and H.P. Oepen
Fabrication of Magnetic Co/Pt Nanodots Utilizing Filled Diblock Copolymers
Open Surf. Sci. J. 4, 55, (2012).
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K. Chen, R. Frömter, S. Rössler, N. Mikuszeit, and H.P. Oepen
Uniaxial Magnetic anisotropy of cobalt films deposited on sputtered MgO(001) substrates
Phys. Rev. B 86, 064432, (2012).
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M. Donolato, F. Lofink, S. Hankemeier, J.M. Porro, H.P. Oepen, and P. Vavassori
Characterization of domain wall-based traps for magnetic beads separation
J. Appl. Phys. 111, 07B336, (2012).
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F. Lofink, S. Hankemeier, R. Frömter, J. Kirschner, and H.P. Oepen
Long-time stability of a low-energy electron diffraction spin polarization analyzer for magnetic imaging
Rev. Sci. Instrum. 83, 023708, (2012).
2011
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L. V. Dzemiantsova, M. Karolak, F. Lofink, A. Kubetzka, B. Sachs, K. von Bergmann, S. Hankemeier, T. O. Wehling, R. Frömter, H. P. Oepen, A. I. Lichtenstein, and R. Wiesendanger
Multiscale magnetic study of Ni(111) and graphene on Ni(111)
Phys. Rev. B 84, 205431, (2011).
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S. Schwaiger, M. Klingbeil, J. Kerbst, A. Rottler, R. Costa, A. Koitmäe, M. Bröll, C. Heyn, Y. Stark, D. Heitmann, and S. Mendach
Gain in three-dimensional metamaterials utilizing semiconductor quantum structures
Phys. Rev. B 84, 155325, (2011).
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D. Stickler, R. Frömter, H. Stillrich, C. Menk, H.P. Oepen, C. Gutt, S. Streit-Nierobisch, L.-M. Stadler, G. Grübel, C. Tieg, and F. Yakhou-Harris
Domain size in systems with canted magnetization
Phys. Rev. B 84, 104412, (2011).
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S. S. Zaman, P. Dvořák, R. Ritter, A. Buchsbaum, D. Stickler, H.P. Oepen, M. Schmid, and P. Varga
In-situ magnetic nano-patterning of Fe films grown on Cu(100)
J. Appl. Phys. 110, 024309, (2011).
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A. Kobs, S. Hege, W. Kreuzpaintner, G. Winkler, D. Lott, P. Weinberger, A. Schreyer, and H.P. Oepen
Anisotropic Interface Magnetoresistance in Pt/Co/Pt Sandwiches
Phys. Rev. Lett. 106, 217207, (2011).
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R. Frömter, S. Hankemeier, H.P. Oepen, and J. Kirschner
Optimizing a low-energy electron diffraction spin-polarization analyzer for imaging of magnetic surface structures
Rev. Sci. Instrum. 82, 033704, (2011).
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Y. Zhou, D. Stickler, Y. Du, E. Ahmad, Z. Lu, R. Frömter, H.P. Oepen, D. Wilton, and G. Pan
Size Effect on Magnetic Switching and Interlayer Magnetostatic Coupling in Spin-Valve Nanorings Exchange-Biased by Synthetic Antiferromagnets
IEEE Trans. Magn. 47, 214, (2011).
2010
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C. Tieg, R. Frömter, D. Stickler, S. Hankemeier, A. Kobs, S. Streit-Nierobisch, C. Gutt, G. Grübel, and H. P. Oepen
Imaging the in-plane magnetization in a Co microstructure by Fourier transform holography
Opt. Express 18, 27251, (2010).
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S. Pütter, H. Stillrich, A. Meyer, N. Franz, and H.P. Oepen
Nanostructured Ferromagnetic Systems for the Fabrication of Short-Period Magnetic Superlattices
in " Quantum Materials", D. Heitmann (Editor), Springer, Berlin Heidelberg, p395, (2010).
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S. Hankemeier, A. Kobs, R. Frömter and H.P. Oepen
Controlling the properties of vortex domain walls via magnetic seeding fields
Phys. Rev. B 82, 064414, (2010).
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C. Tieg, R. Frömter, D. Stickler, H. Stillrich, C. Menk, S. Streit-Nierobisch, L.-M. Stadler, C. Gutt, O. Leupold, M. Sprung, G. Grübel, and H.P. Oepen
Overcoming the field-of-view restrictions in soft x-ray holographic imaging
J. Phys.: Conf. Ser. 211, 012024, (2010).
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C. Gutt, S. Streit-Nierobisch, L.M. Stadler, B. Pfau, C.M. Günther, R. Könnecke, R. Frömter, A. Kobs, D. Stickler, H.P. Oepen, R.R. Fäustlin, R. Treusch, J. Feldhaus, E. Weckert, I.A. Vartanyants, M. Grunze, A. Rosenhahn, T. Wilhein, S. Eisebitt, and G. Grübel
Single-pulse resonant magnetic scattering using a soft x-ray free-electron laser
Phys. Rev. B 81, 100401(R), (2010).
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H. Stillrich, C. Menk, R. Frömter, and H.P. Oepen
Magnetic anisotropy and spin reorientation in Co/Pt multilayers: influence of preparation
J. Magn. Magn. Mater. 322, 1353, (2010).
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B. Krüger, M. Najafi, S. Bohlens, R. Frömter, D. P. F. Möller, and D. Pfannkuche
Proposal of a Robust Measurement Scheme for the Nonadiabatic Spin Torque Using the Displacement of Magnetic Vortices
Phys. Rev. Lett. 104, 077201, (2010).
-
D. Stickler, R. Frömter, H. Stillrich, C. Menk, C. Tieg, S. Streit-Nierobisch, M. Sprung, C. Gutt, L.-M. Stadler, O. Leupold, G. Grübel, and H.P. Oepen
Soft x-ray holographic microscopy
Appl. Phys. Lett. 96, 042501, (2010).
2009
-
S. Streit-Nierobisch, D. Stickler, C. Gutt, L.-M. Stadler, H. Stillrich, C. Menk, R. Frömter, C. Tieg, O. Leupold, H. P. Oepen, and G. Grübel
Magnetic soft x-ray holography study of focused ion beam-patterned Co/Pt multilayers
J. Appl. Phys. 106, 083909, (2009).
-
A. Kobs, H. Spahr, D. Stickler, S. Hankemeier, R. Frömter, and H.P. Oepen
Magnetic energies of single submicron permalloy rectangles determined via magnetotransport
Phys. Rev. B 80, 134415, (2009).
-
S Hankemeier, R Frömter, N. Mikuszeit, D. Stickler, H. Stillrich, S. Pütter, E.Y. Vedmedenko, H.P. Oepen
Magnetic Ground State of Single and Coupled Permalloy Rectangles
Phys. Rev. Lett. 103, 147204, (2009).
-
S. Pütter, N. Mikuszeit, E. Y. Vedmedenko, and H. P. Oepen
The effect of tilted edges on the shape anisotropy and stray field coupling of uniformly magnetized rectangular elements
J. Appl. Phys. 106, 043916, (2009).
-
C. Gutt, L.-M. Stadler, S. Streit-Nierobisch, A.P. Mancuso, A. Schropp, B. Pfau, C.M. Gunther, R. Könnecke, J. Gulden, B. Reime, J. Feldhaus, E. Weckert, I.A. Vartanyants, O. Hellwig, F. Staier, R. Barth, M. Grunze, A. Rosenhahn, D. Stickler, H. Stillrich, R. Frömter, H.P. Oepen, M. Martins, T. Nisius, T. Wilhein, B. Faatz, N. Guerassimova, K. Honkavaara, V. Kocharyan, R. Treusch, E. Saldin, S. Schreiber, E.A. Schneidmiller, M.V. Yurkov, S. Eisebitt, and G. Grübel,
Resonant magnetic scattering with soft x-ray pulses from a free-electron laser operating at 1.59 nm
Phys. Rev. B 79, 212406, (2009).
-
S. Schwaiger, M. Bröll, A. Krohn, A. Stemmann, C. Heyn, Y. Stark, D. Stickler, D. Heitmann, and S. Mendach
Rolled-Up Three-Dimensional Metamaterials with a Tunable Plasma Frequency in the Visible Regime
Phys. Rev. Lett. 102, 163903, (2009).
-
H. Stillrich, C. Menk, R. Frömter, and H.P. Oepen
Magnetic anisotropy and the cone state in Co/Pt multilayer films
J. Appl. Phys. 105, 07C308, (2009).
-
Y. Stark, R. Frömter, D. Stickler, and H.P. Oepen
Sputter yields of single- and polycrystalline metals for application in focused ion beam technology
J. App. Phys. 105, 013542, (2009).
-
A. P. Mancuso, A. Schropp, B. Reime, L.-M. Stadler, A. Singer, J. Gulden, S. Streit-Nierobisch, C. Gutt, G. Grübel, J. Feldhaus, F. Staier, R. Barth, A. Rosenhahn, M. Grunze, T. Nisius, T. Wilhein, D. Stickler, H. Stillrich, R. Frömter, H. P. Oepen, M. Martins, B. Pfau, C. M. Günther, R. Könnecke, S. Eisebitt, B. Faatz, N. Guerassimova, K. Honkavaara, V. Kocharyan, R. Treusch, E. Saldin, S. Schreiber, E. A. Schneidmiller, M. V. Yurkov, E. Weckert, and I. A. Vartanyants
Coherent-Pulse 2D Crystallography Using a Free-Electron Laser X-Ray Source
Phys. Rev. Lett. 102, 035502, (2009).
2008
-
H. Stillrich, A. Frömsdorf, S. Pütter; S. Förster, HP. Oepen
Sub-20 nm magnetic dots with perpendicular magnetic anisotropy
Adv. Funct. Mater. 18, 76, (2008).
-
R. Frömter, H. Stillrich, C. Menk, HP. Oepen
Imaging the cone state of the spin reorientation transition.
Phys. Rev. Lett. 100, 207202, (2008).
-
S. Hankemeier, K. Sachse, Y. Stark, R. Frömter, HP. Oepen
Ultrahigh current densities in Permalloy nanowires on diamond
Appl. Phys. Lett. 92, 242503, (2008).
-
D. Stickler, R. Frömter, W. Li, A. Kobs, HP. Oepen
Integrated setup for the fabrication and measurement of magnetoresistive nanoconstrictions in ultrahigh vacuum.
Rev. Sci. Instrum. 79, 103901, (2008).
2007
-
H. P. Oepen and R. Frömter
Scanning Electron Microscopy with Polarization Analysis
in "The Handbook of Magnetism and Advanced Magnetic Materials", Volume 3, Wiley, Chichester, (2007).
-
R. Dinter, H. Stillrich, C. Heyn, S. Pütter, HP. Oepen, W. Hansen, A. Frömsdorf, S. Förster, W. Lee, K. Nielsch
Shallow HEMTs for lateral magnetic superlattices
AIP Conf. Proc. 893, 573, (2007).
-
S. Pütter, H. Stillrich, A. Frömsdorf, C. Menk, R. Frömter, S. Förster, HP. Oepen
Magnetic antidot arrays using SiO2 filled diblock copolymer micelles as ion etching mask
J. Magn. Magn. Mater. 316, E40-E43, (2007).
-
Andreas Frömsdorf, Andreas Kornowski, Sabine Pütter, Holger Stillrich, Li-Ting Lee
Highly ordered nanostructured surfaces obtained with silica-filled diblock-copolymer micelles as templates
Small 3, 880, (2007).
-
S. Fiedler, H. Stillrich, HP. Oepen
Magneto-optic properties of electron cyclotron resonance ion beam sputtered and magnetron sputtered Co/Pt multilayers
J. App. Phys. 102, (2007).
-
R. Frömter, C. Menk, H. Stillrich, HP. Oepen
Imaging the domain pattern of the canted magnetization state in Co/Pt multilayer films
Vacuum 82, 395-401, (2007).
2005
-
EY. Vedmedenko, K. von Bergmann,HP. Oepen, R. Wiesendanger
Lattice-dependent anisotropy in the orientation of magnetic domain walls
J. Magn. Magn. Mater. 290, 746-749, (2005).
-
EY. Vedmedenko, N. Mikuszeit, HP. Oepen, R. Wiesendanger
Multipolar ordering and magnetization reversal in two-dimensional nanomagnet arrays.
Phys. Rev. Lett. 95, 207202, (2005).
-
M. Wellhöfer, M. Weißenborn, R. Anton, S. Pütter, HP. Oepen
Morphology and magnetic properties of ECR ion beam sputtered Co/Pt films
J. Magn. Magn. Mater. 292, 345-358, (2005).
-
H. Hopster, H.P. Oepen (Eds.)
Magnetic Microscopy of Nanostructures
An overview of techniques to image the magnetic structure on the nano-scale
Springer Series: NanoScience and Technology XVIII, (2005).
-
H.P. Oepen, H. Hopster
SEMPA studies of thin films, structures, and exchange coupled layers
in "Magnetic Microscopy of Nanostructures", p. 137-167, Springer, Berlin Heidelberg, (2005).
-
N. Mikuszeit, E. Y. Vedmedenko, R. Wiesendanger, and H. P. Oepen
Multipole moments of in-plane magnetized disks
J. App. Phys. 97, 0J502, (2005).
-
N. Mikuszeit, S. Pütter, R. Frömter, and H. P. Oepen
Magneto-optic Kerr effect: Incorporating the nonlinearities of the analyzer into static photometric ellipsometry analysis
J. App. Phys. 97, 103107, (2005).
2004
-
E. Y. Vedmedenko, A. Kubetzka, K. von Bergmann, O. Pietzsch, M. Bode, J. Kirschner, H. P. Oepen, and R. Wiesendanger
Domain Wall Orientation in Magnetic Nanowires
Phys. Rev. Lett. 92, 77207, (2004).
-
N. Mikuszeit, S. Pütter, and H. P. Oepen
Thickness dependent magnetization canting in Co on Cu(1 1 13)
J. Magn. Magn. Mater. 268, 340, (2004).
-
F. Porrati, H.P. Oepen, and J. Kirschner
Magnetic configurations in anisotropic stripe systems
J. Magn. Magn. Mater. 283, 133, (2004).
-
N. Mikuszeit, E.Y. Vedmedenko, and H.P. Oepen
Multipole interaction of polarized single-domain particles
J. Phys.: Condens. Matter 16, 9037, (2004).
2003
-
E.Y. Vedmedenko, H.P. Oepen, and J.Kirschner
Decagonal Quasiferromagnetic Microstructure on the Penrose Tiling
Phys. Rev. Lett. 90, 137203, (2003).
-
Y.T. Millev, E.Y. Vedmedenko, and H.P. Oepen
Dipolar magnetic anisotropy energy of laterally confined ultrathin ferromagnets: multiplicative separation of discrete and continuum contributions
J. Phys. D: Appl. Phys. 36, 2945, (2003).
-
P.J. Jensen, S. Knappmann, W. Wulfhekel, H.P. Oepen
Anisotropic susceptibility of ferromagnetic ultrathin Co films on vicinal Cu
Phys. Rev. B. 67, 184417, (2003).
-
E.Y. Vedmedenko, H.P. Oepen, and J. Kirschner
Size-dependent spin reorientation transition in nanoplatelets
Phys. Rev. B. 67, 012409, (2003).
-
W. Wulfhekel, F. Zavaliche, R. Hertel, S. Bodea, G. Steierl, G. Liu, J. Kirschner, and H.P. Oepen
Growth and magnetism of Fe nanostructures on W(001)
Phys. Rev. B 68, 144416, (2003).
-
E.Y. Vedmedenko, H.P. Oepen, J. Kirschner
Size-dependent magnetic properties in nanoplatelets
J. Magn. Magn. Mater. 256, 237-242, (2003).
-
R. Frömter, H.P.Oepen & J. Kirschner
A miniaturized detector for high-resolution SEMPA
Appl. Phys. A. 76, 869, (2003).
2002
-
E.Y. Vedmedenko, H.P. Oepen, and J. Kirschner
Microstructure of the spin reorientation transition in second-order approximation of magnetic anisotropy
Phys. Rev. B. 66, 214401, (2002).
-
H.P. Oepen, G. Steierl & J. Kirschner
Scanning electron microscope with polarization analysis: Micromagnetic structures in ultrathin films
J. Vac. Sci. Techn. B 20, 2535, (2002).
-
H.P. Oepen, W. Lutzke & J. Kirschner
Magnetization reversal in ultrathin Co/Cu(001)-microstructures
J. Magn. Magn. Mater. 251, 169, (2002).
-
J. Hesse, S. Pütter, O. Michele, H. Bremers, O. Hupe, H. Hartung, M. Eichler
Probing magnetism of nanosized single domain particle systems
Phys. Status Solidi A 189, 481, (2002).
-
S. Mendach, C.M. Hu, C. Heyn, S. Schnüll, H.P. Oepen, R. Anton, and W. Hansen
Strain relaxation in high-mobility InAs inserted-channel heterostructures with metamorphic buffer
Physica E 13, 1204, (2002).
2001
-
E.Y. Vedmedenko, H. P. Oepen, J. Kirschner
Magnetic microstructure of the spin reorientation transition
J. Appl. Phys. 89, 7145, (2001).
-
S. Pütter, H.F. Ding, Y.T. Millev, H.P. Oepen,J. Kirschner
Magnetic susceptibility: An easy approach to the spin-reorientation transition
Phys. Rev. B. 64, 092409, (2001).
-
H.F. Ding, S. Pütter, H.P. Oepen & J. Kirschner
Spin-reorientation transition in thin films studied by the component-resolved Kerr effect
Phys. Rev. B 63, 134425, (2001).
2000
-
E. Vedmedenko, H.P. Oepen, A. Ghazali, J.-C.S. Levy, and J. Kirschner
Magnetic Microstructure of the Spin Reorientation Transition: A Computer Experiment
Phys. Rev. Lett. 84, 5884, (2000).
-
H.F. Ding, S. Pütter, H.P. Oepen & J. Kirschner
Experimental method for separating longitudinal and polar Kerr signals
J. Magn. Magn. Mater. 212, L5, (2000).
-
G. Steierl, W. Lutzke, H.P. Oepen, S. Tegen, C.M. Schneider, J. Kirschner
Investigation of lithographically produced magnetic microstructures by using SEMPA
Magnetoelektronik - Zukunftsperspektive für Forschung und Technologie in Deutschland. Tagungsband Statusseminar 14.-16. Juni 2000, Dresden, VDI-Technologiezentrum, Düsseldorf, 341-343, (2000).
-
J.-C.S. Levy, A. Ghazali, E.Y. Vedmedenko
Magnetic structures in ultrathin films and nanostructures: simulation
Acta Physica Polonica A 97, 431-434, (2000).
-
H.P. Oepen, Y.T. Millev, H.F. Ding, S. Pütter, J. Kirschner
Field-driven reorientation in ultrathin ferromagnetic films with uniaxial anisotropy
Phys. Rev. B 61, 9506, (2000).
-
W. Wulfhekel, F. Zavaliche, F. Poratti, H.P. Oepen, J. Kirschner
Nano-patterning of magnetic anisotropy by controlled strain relief
Europhys. Lett. 49, 651, (2000).
1999
-
Y.T. Millev, H.P. Oepen, J. Kirschner
Phase boundaries of a uniaxial system in an applied field of arbitrary direction
J. Phys. D: Appl. Phys. 32, 2599, (1999).
-
E.Y. Vedmedenko, A. Ghazali, and J-C.S. Levy
Magnetic vortices in ultrathin films
Phys. Rev. B 59, 3329-3332, (1999).
-
H.P. Oepen, J. Kirschner
Nanomagnetic structures at surfaces
Current Opinion in Solid State & Materials Science 4, (1999).
-
C. Teichert, J. Barthel, H.P. Oepen, J. Kirschner
Fabrication of nanomagnet arrays by shadow deposition on self-organized semiconductor substrates
Appl. Phys. Lett. 74, 588, (1999).
1998
-
Y.T. Millev, H.P. Oepen, J. Kirschner
Spin-reorientation transitions in ultrathin ferromagnetic films under applied field
IEEE Trans. Magn. 34, 1210, (1998).
-
E.Y. Vedmedenko, A. Ghazali, J.-C.S. Levy
Magnetic structures of Ising and vectors spins monolayers by Monte-Carlo simulations
Surf. Science 402-404, 391-395, (1998).
-
Y.T. Millev, J.R. Cullen, H.P. Oepen
The field-space perspective on hysteresis in uniaxial ferromagnets
J. Appl. Phys. 83, 6500, (1998).
-
R. Skomski, H.P. Oepen, J. Kirschner
Unidirectional anisotropy in ultrathin transition-metal films
Phys. Rev. B 58, 11138, (1998).
-
R. Skomski, H.P. Oepen, J. Kirschner
Micromagnetics of ultrathin films with perpendicular magnetic anisotropy
Phys. Rev. B 58, 3223, (1998).
-
Y.T. Millev, H.P. Oepen, J. Kirschner
Influence of external field on spin reorientation transitions in uniaxial ferromagnets: I) General analysis for bulk and thin-film systems
Phys. Rev. B 57, 5837, (1998).
-
Y.T. Millev, H.P. Oepen, J. Kirschner
Influence of external field on spin reorientation transitions in uniaxial ferromagnets: II) Ultrathin ferromagnetic films
Phys. Rev. B 57, 5848, (1998).