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Spin relaxation signature of colossal magnetic anisotropy in platinum atomic chains

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author Bergman, Anders
dc.contributor.author Hellsvik, Johan
dc.contributor.author Bessarab, Pavel
dc.contributor.author Delin, Anna
dc.date.accessioned 2017-09-26T14:45:14Z
dc.date.available 2017-09-26T14:45:14Z
dc.date.issued 2016-11-14
dc.identifier.citation Bergman, A. et al. Spin relaxation signature of colossal magnetic anisotropy in platinum atomic chains. Sci. Rep. 6, 36872; doi: 10.1038/srep36872 (2016).
dc.identifier.issn 2045-2322
dc.identifier.uri https://hdl.handle.net/20.500.11815/411
dc.description.abstract Recent experimental data demonstrate emerging magnetic order in platinum atomically thin nanowires. Furthermore, an unusual form of magnetic anisotropy – colossal magnetic anisotropy (CMA) – was earlier predicted to exist in atomically thin platinum nanowires. Using spin dynamics simulations based on first-principles calculations, we here explore the spin dynamics of atomically thin platinum wires to reveal the spin relaxation signature of colossal magnetic anisotropy, comparing it with other types of anisotropy such as uniaxial magnetic anisotropy (UMA). We find that the CMA alters the spin relaxation process distinctly and, most importantly, causes a large speed-up of the magnetic relaxation compared to uniaxial magnetic anisotropy. The magnetic behavior of the nanowire exhibiting CMA should be possible to identify experimentally at the nanosecond time scale for temperatures below 5 K. This time-scale is accessible in e.g., soft x-ray free electron laser experiments.
dc.description.sponsorship We acknowledge financial support from Vetenskapsrådet (VR), The Royal Swedish Academy of Sciences (KVA), the Knut and Alice Wallenberg Foundation (KAW), Swedish Energy Agency (STEM), Swedish Foundation for Strategic Research (SSF), Carl Tryggers Stiftelse (CTS), eSSENCE, Icelandic Research Fund, and Göran Gustafssons Stiftelse (GGS). The computations were performed on resources provided by the Swedish National Infrastructure for Computing (SNIC) at the National Supercomputer Center (NSC), Linköping University, the PDC Center for High Performance Computing (PDC-HPC), KTH, and the High Performance Computing Center North (HPC2N), Umeå University.
dc.format.extent 36872
dc.language.iso en
dc.publisher Springer Nature
dc.relation.ispartofseries Scientific Reports;6(1)
dc.rights info:eu-repo/semantics/openAccess
dc.subject Magnetic properties
dc.subject Magnetic materials
dc.subject Nanowires
dc.subject Segulmagn
dc.title Spin relaxation signature of colossal magnetic anisotropy in platinum atomic chains
dc.type info:eu-repo/semantics/article
dcterms.license This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
dc.description.version Peer Reviewed
dc.identifier.journal Scientific Reports
dc.identifier.doi 10.1038/srep36872
dc.contributor.department Raunvísindastofnun (HÍ)
dc.contributor.department Science Institute (UI)
dc.contributor.school Verkfræði- og náttúruvísindasvið (HÍ)
dc.contributor.school School of Engineering and Natural Sciences (UI)

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