Opin vísindi

Spin relaxation signature of colossal magnetic anisotropy in platinum atomic chains

Spin relaxation signature of colossal magnetic anisotropy in platinum atomic chains


Titill: Spin relaxation signature of colossal magnetic anisotropy in platinum atomic chains
Höfundur: Bergman, Anders
Hellsvik, Johan
Bessarab, Pavel   orcid.org/0000-0003-3351-7172
Delin, Anna
Útgáfa: 2016-11-14
Tungumál: Enska
Umfang: 36872
Háskóli/Stofnun: Háskóli Íslands
University of Iceland
Svið: Verkfræði- og náttúruvísindasvið (HÍ)
School of Engineering and Natural Sciences (UI)
Deild: Raunvísindastofnun (HÍ)
Science Institute (UI)
Birtist í: Scientific Reports;6(1)
ISSN: 2045-2322
DOI: 10.1038/srep36872
Efnisorð: Magnetic properties; Magnetic materials; Nanowires; Segulmagn
URI: https://hdl.handle.net/20.500.11815/411

Skoða fulla færslu

Tilvitnun:

Bergman, A. et al. Spin relaxation signature of colossal magnetic anisotropy in platinum atomic chains. Sci. Rep. 6, 36872; doi: 10.1038/srep36872 (2016).

Útdráttur:

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.

Leyfi:

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/

Skrár

Þetta verk birtist í eftirfarandi safni/söfnum:


Fletta

Um vefinn

Reikningurinn minn