Institute Homepage
Institute Homepage Sign In

Publications

DEPARTMENTS

Emperical Interference

Haptic Intelligence

Modern Magnetic Systems

Perceiving Systems

Physical Intelligence

Robotic Materials

Social Foundations of Computation

Research Groups

Autonomous Vision

Autonomous Learning

Bioinspired Autonomous Miniature Robots

Dynamic Locomotion

Embodied Vision

Human Aspects of Machine Learning

Intelligent Control Systems

Learning and Dynamical Systems

Locomotion in Biorobotic and Somatic Systems

Micro, Nano, and Molecular Systems

Movement Generation and Control

Neural Capture and Synthesis

Physics for Inference and Optimization

Organizational Leadership and Diversity

Probabilistic Learning Group

Topics

Robot Learning

Conference Paper

2022

Autonomous Learning

Robotics

AI

Career

Award

Modern Magnetic Systems Miscellaneous X-ray microscopy of spin wave focusing using a Fresnel zone plate Gräfe, J., Decker, M., Keskinbora, K., Noske, M., Gawronski, P., Stoll, H., Back, C. H., Goering, E. J., Schütz, G. 2017 URL BibTeX
Modern Magnetic Systems Article Ab initio theory for ultrafast magnetization dynamics with a dynamic band structure Müller, B. Y., Haag, M., Fähnle, M. {Journal of Magnetism and Magnetic Materials}, 414:14-18, North-Holland, Amsterdam, 2016 DOI BibTeX
Modern Magnetic Systems Article Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmions at room temperature Moreau-Luchaire, C., Moutafis, C., Reyren, N., Sampaio, J., Vaz, C. A. F., Van Horne, N., Bouzehouane, K., Garcia, K., Deranlot, C., Warnicke, P., Wohlhüter, P., George, J., Weigand, M., Raabe, J., Cros, V., Fert, A. {Nature Nanotechnology}, 11(5):444-448, Nature Publishing Group, London, 2016 DOI BibTeX
Modern Magnetic Systems Ph.D. Thesis Austauschgekoppelte Moden in magnetischen Vortexstrukturen Dieterle, G. Universität Stuttgart, Stuttgart, 2016 BibTeX
Modern Magnetic Systems Article Coercivity scaling in antidot lattices in Fe, Ni, and NiFe thin films Gräfe, J., Schütz, G., Goering, E. J. {Journal of Magnetism and Magnetic Materials}, 419:517-520, North-Holland, Amsterdam, 2016
Antidot lattices can be used to artificially engineer magnetic properties in thin films, however, a conclusive model that describes the coercivity enhancement in this class of magnetic nano-structures has so far not been found. We prepared Fe, Ni, and NiFe thin films and patterned each with 21 square antidot lattices with different geometric parameters and measured their hysteretic behavior. On the basis of this extensive dataset we are able to provide a model that can describe both the coercivity scaling over a wide range of geometric lattice parameters and the influence of different materials.
DOI BibTeX
Modern Magnetic Systems Article Collective modes in three-dimensional magnonic vortex crystals Hänze, M., Adolff, C. F., Schulte, B., Möller, J., Weigand, M., Meier, G. {Scientific Reports}, 6, Nature Publishing Group, London, UK, 2016 DOI BibTeX
Modern Magnetic Systems Article Combined first-order reversal curve and x-ray microscopy investigation of magnetization reversal mechanisms in hexagonal antidot lattices Gräfe, J., Weigand, M., Stahl, C., Träger, N., Kopp, M., Schütz, G., Goering, E. J., Haering, F., Ziemann, P., Wiedwald, U. {Physical Review B}, 93(1), American Physical Society, Woodbury, NY, 2016
The magnetization reversal in nanoscaled antidot lattices is widely investigated to understand the tunability of the magnetic anisotropy and the coercive field through nanostructuring of thin films. By investigating highly ordered focused ion beam milled antidot lattices with a combination of first-order reversal curves and magnetic x-ray microscopy, we fully elucidate the magnetization reversal along the distinct orientations of a hexagonal antidot lattice. This combination proves especially powerful as all partial steps of this complex magnetization reversal can be identified and subsequently imaged. Through this approach we discovered several additional steps that were neglected in previous studies. Furthermore, by imaging the microscopic magnetization state during each reversal step, we were able to link the coercive and interaction fields determined by the first-order reversal curve method to true microscopic magnetization configurations and determine their origin.
DOI BibTeX
Modern Magnetic Systems Article Comparative study of ALD SiO2 thin films for optical applications Pfeiffer, K., Shestaeva, S., Bingel, A., Munzert, P., Ghazaryan, L., van Helvoirt, C., Kessels, W. M. M., Sanli, U. T., Grévent, C., Schütz, G., Putkonen, M., Buchanan, I., Jensen, L., Ristau, D., Tünnermann, A., Szeghalmi, A. {Optical materials express}, 6(2):660-670, OSA, Washington, DC, 2016 DOI BibTeX
Modern Magnetic Systems Master Thesis Density matrix calculations for the ultrafast demagnetization after femtosecond laser pulses Weng, W. Universität Stuttgart, Stuttgart, 2016 BibTeX
Modern Magnetic Systems Article Developments in the Ni-Nb-Zr amorphous alloy membranes Sarker, S., Chandra, D., Hirscher, M., Dolan, M., Isheim, D., Wermer, J., Viano, D., Baricco, M., Udovic, T. J., Grant, D., Palumbo, O., Paolone, A., Cantelli, R. {Applied Physics A}, 122(3), Springer-Verlag Heidelberg, Heidelberg, 2016 DOI BibTeX
Modern Magnetic Systems Article Direct patterning of vortex generators on a fiber tip using a focused ion beam Vayalamkuzhi, P., Bhattacharya, S., Eigenthaler, U., Keskinbora, K., Salman, C. T., Hirscher, M., Spatz, J. P., Viswanathan, N. K. {Optics Letters}, 41(10):2133-2136, Optical Society of America, Washington, 2016 DOI BibTeX
Modern Magnetic Systems Article Effect of surface configurations on the room-temperature magnetism of pure ZnO Chen, Y., Wang, Z., Leineweber, A., Baier, J., Tietze, T., Phillipp, F., Schütz, G., Goering, E. {Journal of Materials Chemistry C}, 4(19):4166-4175, Royal Society of Chemistry, London, UK, 2016 DOI BibTeX
Modern Magnetic Systems Master Thesis Electric field manipulation of perpendicular magnetic anisotropy in microstructured Cobalt-Iron-Boron Magnesium Oxide thin film systems Bauch, J. Universität Stuttgart, Stuttgart, 2016 BibTeX
Modern Magnetic Systems Article Enhanced non-adiabaticity in vortex cores due to the emergent Hall effect Bisig, A., Akosa, C. A., Moon, J., Rhensius, J., Moutafis, C., von Bieren, A., Heidler, J., Kiliani, G., Kammerer, M., Curcic, M., Weigand, M., Tyliszczak, T., Van Waeyenberge, B., Stoll, H., Schütz, G., Lee, K., Manchon, A., Kläui, M. {Physical Review Letters}, 117(27), American Physical Society, Woodbury, N.Y., 2016 DOI BibTeX
Modern Magnetic Systems Article Ferromagnetic behaviour of ZnO: the role of grain boundaries Straumal, B. B., Protasova, S. G., Mazilkin, A. A., Goering, E., Schütz, G., Straumal, P. B., Baretzky, B. {Beilstein Journal of Nanotechnology}, 7:1936-1947, Beilstein-Institut, Frankfurt am Main, 2016 DOI BibTeX
Modern Magnetic Systems Article Geometric control of the magnetization reversal in antidot lattices with perpendicular magnetic anisotropy Gräfe, J., Weigand, M., Träger, N., Schütz, G., Goering, E. J., Skripnik, M., Nowak, U., Haering, F., Ziemann, P., Wiedwald, U. {Physical Review B}, 93(10), American Physical Society, Woodbury, NY, 2016
While the magnetic properties of nanoscaled antidot lattices in in-plane magnetized materials have widely been investigated, much less is known about the microscopic effect of hexagonal antidot lattice patterning on materials with perpendicular magnetic anisotropy. By using a combination of first-order reversal curve measurements, magnetic x-ray microscopy, and micromagnetic simulations we elucidate the microscopic origins of the switching field distributions that arise from the introduction of antidot lattices into out-of-plane magnetized GdFe thin films. Depending on the geometric parameters of the antidot lattice we find two regimes with different magnetization reversal processes. For small antidots, the reversal process is dominated by the exchange interaction and domain wall pinning at the antidots drives up the coercivity of the system. On the other hand, for large antidots the dipolar interaction is dominating which leads to fragmentation of the system into very small domains that can be envisaged as a basis for a bit patterned media.
DOI BibTeX
Modern Magnetic Systems Ph.D. Thesis Gepinnte Bahnmomente in magnetischen Heterostrukturen Audehm, P. Universität Stuttgart, Stuttgart (und Cuvillier Verlag, Göttingen), 2016 BibTeX
Modern Magnetic Systems Article Growth and characterizationof large weak topological insulator Bi2Tel single crystal by Bismuth self-flux method Ryu, G., Son, K., Schütz, G. {Journal of Crystal Growth}, 440:26-30, North-Holland, Amsterdam, 2016 DOI BibTeX
Modern Magnetic Systems Ph.D. Thesis Helium und Hydrogen Isotope Adsorption and Separation in Metal-Organic Frameworks Zaiser, I. Universität Stuttgart, Stuttgart (und Cuvillier Verlag, Göttingen), 2016 BibTeX
Modern Magnetic Systems Article High-resolution analysis of currents at low-angle grain boundaries in YBCO thin films using magnetooptics and magnetic x-ray microscopy Ruoß, S., Stahl, C., Bayer, J., Schütz, G., Albrecht, J., Laviano, F. {IEEE Transactions on Applied Superconductivity}, 26(3), IEEE, New York, NY, 2016 DOI BibTeX
Modern Magnetic Systems Article Hydrogen-based energy storage (IEA-HIA Task 32) Buckley, C. E., Chen, P., van Hassel, B. A., Hirscher, M. {Applied Physics A}, 122(2), Springer-Verlag Heidelberg, Heidelberg, 2016 DOI BibTeX
Modern Magnetic Systems Article Irreproducibility in hydrogen storage material research Broom, D. P., Hirscher, M. {Energy \& Environmental Science}, 9(11):3368-3380, Royal Society of Chemistry, Cambridge, UK, 2016 DOI BibTeX
Modern Magnetic Systems Article Local domain-wall velocity engineering via tailored potential landscapes in ferromagnetic rings Richter, K., Krone, A., Mawass, M., Krüger, B., Weigand, M., Stoll, H., Schütz, G., Kläui, M. {Physical Review Applied}, 5(2), American Physical Society, College Park, Md. [u.a.], 2016 DOI BibTeX
Modern Magnetic Systems Article Localized domain wall nucleation dynamics in asymmetric ferromagnetic rings revealed by direct time-resolved magnetic imaging Richter, K., Krone, A., Mawass, M., Krüger, B., Weigand, M., Stoll, H., Schütz, G., Kläui, M. {Physical Review B}, 94(2), American Physical Society, Woodbury, NY, 2016 DOI BibTeX
Modern Magnetic Systems Article Magnetic X-ray microscopy at low temperatures - Visualization of flux distributions in superconductors Stahl, C., Ruoß, S., Weigand, M., Bechtel, M., Schütz, G., Albrecht, J. {AIP Conference Proceedings}, 1696, AIP Publishing, Melville, NY, 2016 DOI BibTeX
Modern Magnetic Systems Article Magnetic switching of nanoscale antidot lattices Wiedwald, U., Gräfe, J., Lebecki, K. M., Skripnik, M., Haering, F., Schütz, G., Ziemann, P., Goering, E., Nowak, U. {Beilstein Journal of Nanotechnology}, 7:733-750, Beilstein-Institut, Frankfurt am Main, 2016
We investigate the rich magnetic switching properties of nanoscale antidot lattices in the 200 nm regime. In-plane magnetized Fe, Co, and Permalloy (Py) as well as out-of-plane magnetized GdFe antidot films are prepared by a modified nanosphere lithography allowing for non-close packed voids in a magnetic film. We present a magnetometry protocol based on magneto-optical Kerr microscopy elucidating the switching modes using first-order reversal curves. The combination of various magnetometry and magnetic microscopy techniques as well as micromagnetic simulations delivers a thorough understanding of the switching modes. While part of the investigations has been published before, we summarize these results and add significant new insights in the magnetism of exchange-coupled antidot lattices.
DOI BibTeX
Modern Magnetic Systems Article Magnetic vortex cores as tunable spin-wave emitters Wintz, S., Tiberkevich, V., Weigand, M., Raabe, J., Lindner, J., Erbe, A., Slavin, A., Fassbender, J. {Nature Nanotechnology}, 11(11):948-953, Nature Publishing Group, London, 2016 DOI BibTeX
Modern Magnetic Systems Article Nanostructured materials for solid-state hydrogen storage: A review of the achievement of COST Action MP1103 Callini, E., Aguey-Zinsou, K., Ahuja, R., Ares, J. R., Bals, S., Biliskov, N., Chakraborty, S., Charalambopoulou, G., Chaudhary, A., Cuevas, F., Dam, B., de Jongh, P., Dornheim, M., Filinchuk, Y., Grbovic-Novakovic, J., Hirscher, M., Jensen, T. R., Jensen, P. B., Novakovic, N., Lai, Q., et al. {International Journal of Hydrogen Energy}, 41(32):14404-14428, Elsevier, Amsterdam, 2016 DOI BibTeX
Modern Magnetic Systems Article Observation of pseudopartial grain boundary wetting in the NdFeB-based alloy Straumal, B. B., Mazilkin, A. A., Protasova, S. G., Schütz, G., Straumal, A. B., Baretzky, B. {Journal of Materials Engineering and Performance}, 25(8):3303-3309, 2016 DOI BibTeX
Modern Magnetic Systems Article Observation of room-temperature magnetic skyrmions and their current-driven dynamics in ultrathin metallic ferromagnets Woo, S., Litzius, K., Krüger, B., Im, M., Caretta, L., Richter, K., Mann, M., Krone, A., Reeve, R. M., Weigand, M., Agrawal, P., Lemesh, I., Mawass, M., Fischer, P., Kläui, M., Beach, G. S. D. {Nature Materials}, 15(5):501-506, Nature Pub. Group, London, UK, 2016 DOI BibTeX
Modern Magnetic Systems Article On the synthesis and microstructure analysis of high performance MnBi Chen, Y., Sawatzki, S., Ener, S., Sepehri-Amin, H., Leineweber, A., Gregori, G., Qu, F., Muralidhar, S., Ohkubo, T., Hono, K., Gutfleisch, O., Kronmüller, H., Schütz, G., Goering, E. {AIP Advances}, 6(12), 2016 DOI BibTeX
Modern Magnetic Systems Article Outlook and challenges for hydrogen storage in nanoporous materials Broom, D. P., Webb, C. J., Hurst, K. E., Parilla, P. A., Gennett, T., Brown, C. M., Zacharia, R., Tylianakis, E., Klontzas, E., Froudakis, G. E., Steriotis, T. A., Trikalitis, P. N., Anton, D. L., Hardy, B., Tamburello, D., Corgnale, C., van Hassel, B. A., Cossement, D., Chahine, R., Hirscher, M. {Applied Physics A}, 122(3), Springer-Verlag Heidelberg, Heidelberg, 2016 DOI BibTeX
Modern Magnetic Systems Article Physical and mathematical justification of the numerical Brillouin zone integration of the Boltzmann rate equation by Gaussian smearing Illg, C., Haag, M., Teeny, N., Wirth, J., Fähnle, M. {Journal of Theoretical and Applied Physics}, 10(1):1-6, Springer, Berlin, Heidelberg, Tehran, 2016 DOI BibTeX
Modern Magnetic Systems Article Pinned orbital moments - A new contribution to magnetic anisotropy Audehm, P., Schmidt, M., Brück, S., Tietze, T., Gräfe, J., Macke, S., Schütz, G., Goering, E. {Scientific Reports}, 6, Nature Publishing Group, London, UK, 2016 DOI BibTeX
Modern Magnetic Systems Article Quantitative magneto-optical analysis of the role of finite temperatures on the critical state in YBCO thin films Albrecht, J., Brück, S., Stahl, C., Ruoß, S. {Superconductor Science and Technology}, 29(11), IOP Pub., Bristol, 2016 DOI BibTeX
Modern Magnetic Systems Article Quantum sieving for separation of hydrogen isotopes using MOFs Oh, H., Hirscher, M. {European Journal of Inorganic Chemistry}, 2016(27):4278-4289, Wiley-VCH, Weinheim, Germany, 2016 DOI BibTeX
Modern Magnetic Systems Article Resistance to the transport of H2 through the external surface of as-made and modified silicalite-1 (MFI) Kalantzopoulos, G. N., Policicchio, A., Maccallini, E., Krkljus, I., Ciuchi, F., Hirscher, M., Agostino, R. G., Golemme, G. {Microporous and Mesoporous Materials}, 220:290-297, Elsevier, Amsterdam, 2016 DOI BibTeX
Modern Magnetic Systems Article Spin wave mediated unidirectional vortex core reversal by two orthogonal monopolar field pulses: The essential role of three-dimensional magnetization dynamics Noske, M., Stoll, H., Fähnle, M., Gangwar, A., Woltersdorf, G., Slavin, A., Weigand, M., Dieterle, G., Förster, J., Back, C. H., Schütz, G. {Journal of Applied Physics}, 119(17), AIP Publishing, New York, NY, 2016 DOI BibTeX
Modern Magnetic Systems Ph.D. Thesis Statische und dynamische Magnetisierungseigenschaften nanoskaliger Überstrukturen Gräfe, J. Universität Stuttgart, Stuttgart (und Cuvillier Verlag, Göttingen), 2016 BibTeX
Modern Magnetic Systems Article Surface defect free growth of a spin dimer TlCuCl3 compound crystals and investigations on its optical and magnetic properties Ryu, G., Son, K. {Journal of Solid State Chemistry}, 237:358-363, Academic Press, Orlando, Fla., 2016 DOI BibTeX
Modern Magnetic Systems Article Switching probabilities of magnetic vortex core reversal studied by table top magneto optic Kerr microscopy Dieterle, G., Gangwar, A., Gräfe, J., Noske, M., Förster, J., Woltersdorf, G., Stoll, H., Back, C. H., Schütz, G. {Applied Physics Letters}, 108(2), American Institute of Physics, Melville, NY, 2016
We have studied vortex core reversal in a single submicron Permalloy disk by polar Kerr microscopy. A sophisticated lock-in-technique based on repetitive switching of the magnetic vortex core and a continuous calibration allows for a reliable determination of the switching probability. This highly sensitive method facilitates the detection of a change in the magnetic moment of the tiny magnetic vortex core which is about 1.5 × 10−17 A m2. We have investigated vortex core switching caused by excitation of the vortex core gyromode with varying frequencies and amplitudes. The frequency range in which switching occurs was found to broaden with increasing excitation amplitude, whereby the highest frequency in this range shifts stronger to higher frequencies than the lowest frequency to lower frequencies. The experimental results are in good agreement with micromagnetic simulations.
DOI BibTeX
Modern Magnetic Systems Article The role of individual defects on the magnetic screening of HTSC films Ruoß, S., Stahl, C., Weigand, M., Zahn, P., Bayer, J., Schütz, G., Albrecht, J. {New Journal of Physics}, 18(10), IOP Publishing, Bristol, 2016 DOI BibTeX
Modern Magnetic Systems Article The usable capacity of porous materials for hydrogen storage Schlichtenmayer, M., Hirscher, M. {Applied Physics A}, 122(4), Springer-Verlag Heidelberg, Heidelberg, 2016 DOI BibTeX
Modern Magnetic Systems Article Three-dimensional character of the magnetization dynamics in magnetic vortex structures: Hybridization of flexure gyromodes with spin waves Noske, M., Stoll, H., Fähnle, M., Gangwar, A., Woltersdorf, G., Slavin, A., Weigand, M., Dieterle, G., Förster, J., Back, C. H., Schütz, G. {Physical Review Letters}, 117(3), American Physical Society, Woodbury, N.Y., 2016 DOI BibTeX
Modern Magnetic Systems Article Two-body problem of core-region coupled magnetic vortex stacks Hänze, M., Adolff, C. F., Velten, S., Weigand, M., Meier, G. {Physical Review B}, 93(5), American Physical Society, Woodbury, NY, 2016 DOI BibTeX
Modern Magnetic Systems Article Ultrafast demagnetization after femtosecond laser pulses: Transfer of angular momentum from the electronic system to magnetoelastic spin-phonon modes Tsatsoulis, T., Illg, C., Haag, M., Müller, B. Y., Zhang, L., Fähnle, M. {Physical Review B}, 93(13), American Physical Society, Woodbury, NY, 2016 DOI BibTeX
Modern Magnetic Systems Ph.D. Thesis Untersuchung des Beitrages von Elektron-Magnon Streuungen zur ultraschnellen Entmagnetisierung nach Femtosekunden Laserbestrahlung ferromagnetischer Filme Haag, M. Universität Stuttgart, Stuttgart, 2016 DOI URL BibTeX
Modern Magnetic Systems Article γ‐Conicein und Coniin aus Geflecktem Schierling Puidokait, M., Graefe, J., Sehl, A., Steinke, K., Siehl, H., Zeller, K., Sicker, D., Berger, S. Chemie in unserer Zeit, 50(6):382-391, 2016
Sokrates ist das bekannteste Opfer eines 399 v.d.Z. in Athen mit dem Schierlingsbecher vollstreckten Todesurteils. Tödlich giftig wirkten darin Alkaloide wie γ‐Conicein und Coniin, die nach Mäuseurin riechen. Schaudern macht, dass dieses Gift sein Opfer allmählich bei vollem Bewusstsein lähmt und dass es kein Gegengift gibt. Auch für Tiere auf der Weide ist Gefleckter Schierling stark giftig. Daher verdrängt die Landwirtschaft den Schierling. Coniin war das erste synthetisierte Alkaloid (Ladenburg, 1886). Schierlingsgifte werden heute nicht medizinisch angewendet. Wir beschreiben die Isolierung von γ‐Conicein und Coniin aus angebautem und wildem Gefleckten Schierling und analysieren ihre Struktur spektroskopisch. Dieser Artikel gehört zur Reihe über die Isolierung und Spektroskopie von Naturstoffen und ergänzt die Kapitel des Buchs “Classics in Spectroscopy” von S. Berger und D. Sicker (Wiley‐VCH 2009). Er beruht auf studentischen Arbeiten ebenso wie auf unserem präparativen Engagement als sie betreuende Wissenschaftler.
DOI BibTeX
Modern Magnetic Systems Article "Job-Sharing" storage of hydrogen in Ru/Li2O nanocomposites Fu, L., Tang, K., Oh, H., Kandavel, M., Bräuniger, T., Vinod Chandran, C., Menzel, A., Hirscher, M., Samuelis, D., Maier, J. {Nano Letters}, 15(6):4170-4175, American Chemical Society, Washington, DC, 2015 DOI BibTeX
Modern Magnetic Systems Conference Paper Automotive domain wall propagation in ferromagnetic rings Richter, K., Mawass, M., Krone, A., Krüger, B., Weigand, M., Schütz, G., Stoll, H., Kläui, M. In IEEE International Magnetics Conference (INTERMAG 2015), IEEE, Beijing, China, 2015 DOI BibTeX