Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Andreas Donges"'
Publikováno v:
Physical Review Research, Vol 3, Iss 2, p 023116 (2021)
Spin torques are at the heart of spin manipulations in spintronic devices. Here, we examine the existence of an optical spin-orbit torque, a relativistic spin torque originating from the spin-orbit coupling of an oscillating applied field with the sp
Externí odkaz:
https://doaj.org/article/0c279bdb9c85409a956215b9311af215
Autor:
Andreas Donges, Niklas Grimm, Florian Jakobs, Severin Selzer, Ulrike Ritzmann, Unai Atxitia, Ulrich Nowak
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 013293 (2020)
Control of magnetic domain wall motion holds promise for efficient manipulation and transfer of magnetically stored information. Thermal magnon currents, generated by temperature gradients, can be used to move magnetic textures, from domain walls to
Externí odkaz:
https://doaj.org/article/389e51272aba43acaa0ea1846fc717d7
Autor:
Daniel Heinze, Karin Everschor-Sitte, Levente Rózsa, Ulrich Nowak, Mathias Kläui, Sascha Kromin, Samridh Jaiswal, Florian Jakobs, Gerhard Jakob, Daniele Pinna, Peter Virnau, Jakub Zázvorka, Andreas Donges, Niklas Keil, Kai Litzius
Publikováno v:
Nature Nanotechnology. 14:658-661
Magnetic skyrmions in thin films can be efficiently displaced with high speed by using spin-transfer torques1,2 and spin–orbit torques3–5 at low current densities. Although this favourable combination of properties has raised expectations for usi
Autor:
Manfred Albrecht, Chen Luo, Hanjo Ryll, László Szunyogh, N. Y. Schmidt, Julian Hintermayr, Ritwik Mondal, Andreas Donges, Florin Radu, Ulrich Nowak
Publikováno v:
Physical Review B. 102
Chemically ordered $L{1}_{0}$ $({\mathrm{Fe}}_{100\ensuremath{-}x}{\mathrm{Cr}}_{x})\mathrm{Pt}$ thin films were expitaxially grown on MgO(001) substrates by magnetron sputter-deposition at $770{\phantom{\rule{0.16em}{0ex}}}^{\ensuremath{\circ}}\math
Autor:
Dominik Legut, John Bowlan, Björn Frietsch, K. M. Döbrich, Martin Teichmann, Andreas Donges, Robert Carley, Ulrich Nowak, Peter M. Oppeneer, Karel Carva, Martin Weinelt
Publikováno v:
Science Advances
4f spin to phonon coupling is crucial for ultrafast spin-wave generation and magnetization dynamics in rare-earth metals.
Ultrafast demagnetization of rare-earth metals is distinct from that of 3d ferromagnets, as rare-earth magnetism is dominat
Ultrafast demagnetization of rare-earth metals is distinct from that of 3d ferromagnets, as rare-earth magnetism is dominat
Non-collinear antiferromagnetic states in Ru-based Heusler compounds induced by biquadratic coupling
We investigate the magnetic properties of Ru$_{2}$Mn$Z$ ($Z$ = Sn, Sb, Ge, Si) chemically ordered full Heusler compounds for zero as well as finite temperatures. Based on first principles calculations we derive the interatomic isotropic bilinear and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ab4e0cc3b3f1ea9af648871f976abf0
http://arxiv.org/abs/1912.10299
http://arxiv.org/abs/1912.10299
Autor:
A. Deák, László Szunyogh, Radu Abrudan, Torsten Kachel, Florin Radu, Ilie Radu, Karsten Holldack, Stefan Eisebitt, Sergii Khmelevskyi, Ulrich Nowak, Andreas Donges, Rolf Mitzner, Martin Hennecke
Publikováno v:
physica status solidi (RRL) – Rapid Research Letters. 15:2170029
The dynamic response of magnetically‐ordered materials to an ultrashort external stimulus depends on microscopic parameters such as magnetic moment, exchange and spin‐orbit interactions. Whereas it is well established that, in multi‐component m
Publikováno v:
Physical Review B. 100
Efficient manipulation of magnetization at ultrashort time scales is of particular interest for future technology. Here, we numerically investigate the influence of the so-called field-derivative torque, which was derived earlier based on relativisti
Autor:
Ulrike Ritzmann, Niklas Grimm, Florian Jakobs, Unai Atxitia, Andreas Donges, Ulrich Nowak, Severin Selzer
Control of magnetic domain wall motion holds promise for efficient manipulation and transfer of magnetically stored information. Thermal magnon currents, generated by temperature gradients, can be used to move magnetic textures, from domain walls, to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2842d7eeeffcb554f077c75cf44b86a8
Autor:
Karel Carva, Mostafa Shalaby, Rolf Allenspach, Ulrich Nowak, Andreas Donges, Peter M. Oppeneer, Christoph P. Hauri
Ultrafast spin dynamics in magnetic materials is generally associated with ultrafast heating of the electronic system by a near infrared femtosecond laser pulse, thus offering only an indirect and nonselective access to the spin order. Here we explor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61a6861638791db58e0b41119928d700
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-360190
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-360190