Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Ulrike Ritzmann"'
Autor:
Joel Cramer, Felix Fuhrmann, Ulrike Ritzmann, Vanessa Gall, Tomohiko Niizeki, Rafael Ramos, Zhiyong Qiu, Dazhi Hou, Takashi Kikkawa, Jairo Sinova, Ulrich Nowak, Eiji Saitoh, Mathias Kläui
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
The Joule heating free magnon spintronics advances conventional electronics but demands more magnon-based logic operations. Here the authors achieved the magnon spin valve functionality in a YIG/CoO/Co structure where the amplitude of transmitted mag
Externí odkaz:
https://doaj.org/article/d5b9aa3bab8148f6a8a1195371fb6b23
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:
Liane Brandt, I. Razdolski, Georg Woltersdorf, N. Liebing, Ulrike Ritzmann, Alexey Melnikov, Piet W. Brouwer, M. Ribow
Publikováno v:
Physical Review B. 104
The exchange stiffness is a central material parameter of all ferromagnetic materials. Its value controls the Curie temperature as well as the dynamic properties of spin waves to a large extent. Using ultrashort spin current pulses we excite perpendi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f110781cd3fe53b3613079dd7faf2ada
https://doi.org/10.1103/physrevb.104.094415
https://doi.org/10.1103/physrevb.104.094415
The design of spin-transport based devices such as magnon transistors or spin valves will require multilayer systems composed of different magnetic materials with different physical properties. Such layered structures can show various interface effec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8c68a0ec13e83cc2d3d0bc60706b742
http://arxiv.org/abs/2109.00286
http://arxiv.org/abs/2109.00286
Autor:
Karel Carva, Ulrich Nowak, Marco Berritta, Ulrike Ritzmann, Tobias Dannegger, Severin Selzer, Peter M. Oppeneer
We explore the possibility of ultrafast, coherent all-optical magnetization switching in antiferromagnets by studying the action of the inverse Faraday effect in CrPt, an easy-plane antiferromagnet. Using a combination of density functional theory an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7a16939a95dd43b01628ed7f57d38d4
Publikováno v:
Physical Review B. 101
Manipulation of magnetic domain walls via a helicity-independent laser pulse has recently been experimentally demonstrated and various physical mechanisms leading to domain wall dynamics have been discussed. Spin-dependent superdiffusive transport of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::036b55704440235948dde20f91194a58
https://doi.org/10.1103/physrevb.101.174418
https://doi.org/10.1103/physrevb.101.174418
The out-of-equilibrium dynamics of electrons and phonons upon laser excitation are often described by the two-temperature model, which assumes that both subsystems are separately in thermal equilibrium. However, recent experiments show that this desc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::adabc17b69a9a9c7e7ebdc6bb7e134b4
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-431842
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-431842
Femtosecond laser pulses can induce ultrafast demagnetization as well as generate bursts of hot-electron spin currents. In trilayer spin valves consisting of two metallic ferromagnetic layers separated by a nonmagnetic one, hot-electron spin currents
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4232fdca4625e96864c26205985def3e
https://refubium.fu-berlin.de/handle/fub188/30107
https://refubium.fu-berlin.de/handle/fub188/30107
Publikováno v:
Physical Review B
Physical Review B, American Physical Society, 2020, 102 (17), pp.174409. ⟨10.1103/PhysRevB.102.174409⟩
Phys.Rev.B
Phys.Rev.B, 2020, 102 (17), pp.174409. ⟨10.1103/PhysRevB.102.174409⟩
Physical Review B, American Physical Society, 2020, 102 (17), pp.174409. ⟨10.1103/PhysRevB.102.174409⟩
Phys.Rev.B
Phys.Rev.B, 2020, 102 (17), pp.174409. ⟨10.1103/PhysRevB.102.174409⟩
Ultrathin ferromagnets with frustrated exchange and the Dzyaloshinskii-Moriya interaction can support topological solitons such as skyrmions and antiskyrmions, which are metastable and can be considered particle-antiparticle counterparts. When spin-o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12fafaab75bb5bad199c1160f22a7f94
https://doi.org/10.17169/refubium-29850
https://doi.org/10.17169/refubium-29850
Autor:
Felix Fuhrmann, Vanessa Gall, Eiji Saitoh, Mathias Kläui, Zhiyong Qiu, Takashi Kikkawa, Rafael Ramos, Jairo Sinova, Dazhi Hou, Joel Cramer, Ulrike Ritzmann, Tomohiko Niizeki, Ulrich Nowak
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Nature Communications
Nature Communications
Information transport and processing by pure magnonic spin currents in insulators is a promising alternative to conventional charge-current-driven spintronic devices. The absence of Joule heating and reduced spin wave damping in insulating ferromagne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e48a94554e5637e72b667e5ef708611c
http://link.springer.com/article/10.1038/s41467-018-03485-5
http://link.springer.com/article/10.1038/s41467-018-03485-5