Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Sönke Wienholdt"'
Autor:
Karel Carva, Martin Teichmann, Peter M. Oppeneer, John Bowlan, Denise Hinzke, Sönke Wienholdt, Robert Carley, Björn Frietsch, Ulrich Nowak, Martin Weinelt
Publikováno v:
Nature Communications
The Heisenberg–Dirac intra-atomic exchange coupling is responsible for the formation of the atomic spin moment and thus the strongest interaction in magnetism. Therefore, it is generally assumed that intra-atomic exchange leads to a quasi-instantan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5df24796f09ef31e1a5e15886604368
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-266725
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-266725
Autor:
Sönke Wienholdt, Ulrich Nowak
Publikováno v:
Springer Proceedings in Physics ISBN: 9783319077420
After thermal excitation ferrimagnets can switch via a transient ferromagnetic-like state. It is shown by spin model simulations that this state follows from a dissipationless dynamics on picosecond time scales, while slower dissipative relaxation le
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41bba86372b860fe2bafedfd0d7443fd
https://doi.org/10.1007/978-3-319-07743-7_44
https://doi.org/10.1007/978-3-319-07743-7_44
Publikováno v:
Physical Review B. 88
(Received 10 December 2012; revised manuscript received 10 June 2013; published 24 July 2013) The switching of rare-earth-based ferrimagnets triggered by thermal excitation is investigated on the basis of an atomistic spin model beyond the rigid-spin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b4cda1549a245bb788054e5c3139852
https://doi.org/10.1103/physrevb.88.020406
https://doi.org/10.1103/physrevb.88.020406
Publikováno v:
Physical Review Letters. 108
Using analytical calculations as well as computer simulations, we show that antiferromagnets can be switched on a time scale of picoseconds using THz laser pulses only. This all-optically triggered switching mechanism rests on the coordinated dynamic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::027b16989f15818cc33581098e2fdb86
https://doi.org/10.1103/physrevlett.108.247207
https://doi.org/10.1103/physrevlett.108.247207
Autor:
Frank Schlickeiser, Unai Atxitia, Denise Hinzke, Ulrich Nowak, Oksana Chubykalo-Fesenko, Sönke Wienholdt
Recent experiments on all-optical switching in GdFeCo and CoGd have raised the question about the importance of the angular momentum or the magnetization compensation point for ultrafast magnetization dynamics. We investigate the dynamics of ferrimag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7800352fdd94b53741da87b73775bc4f