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Thermally driven do...
Thermally driven domain-wall motion in Fe on W(110)
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- Chico, Jonathan (författare)
- Uppsala universitet,Materialteori
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- Etz, Corina (författare)
- Uppsala universitet,Materialteori
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- Bergqvist, Lars (författare)
- KTH,Material- och nanofysik,KTH, Royal Institute of Technology, Department of Materials and Nano Physics
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- Eriksson, Olle (författare)
- Uppsala universitet,Materialteori
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- Fransson, Jonas (författare)
- Uppsala universitet,Materialteori
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- Delin, Anna (författare)
- KTH,Material- och nanofysik,Uppsala Univ, Sweden,Uppsala universitet, Kungliga tekniska högskolan, KTH, Division of Materials Theory, Department of Physics and Astronomy, Uppsala University,Materialteori
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- Bergman, Anders (författare)
- Uppsala universitet,Materialteori
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(creator_code:org_t)
- 2014
- 2014
- Engelska.
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Ingår i: Physical Review B Condensed Matter. - 0163-1829 .- 1095-3795. ; 90:1, s. 014434-
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- It has recently been shown that domain walls (DWs) in ferromagnets can be moved in the presence of thermal gradients. In this work we study the motion of narrow domain walls in low-dimensional systems when subjected to thermal gradients. The system chosen is a monolayer of Fe on W(110) which is known to exhibit a large anisotropy while having a soft exchange, resulting in a very narrow domain wall. The study is performed by means of atomistic spin dynamics simulations coupled to first-principles calculations. By subjecting this system to thermal gradients we observe a temperature-dependent movement of the domain wall. The thermal gradient always makes the domain wall move towards the hotter region of the sample with a velocity proportional to the gradient. Our material specific study is complemented by model simulations to discern the interplay between the thermal gradient, magnetic anisotropy, and the exchange interaction and shows that the larger DW velocities are found for materials with broader domain-wall width. The relatively slow DW motion of the Fe/W(110) system is hence primarily caused by its narrow domain-wall width, which results from its large magnetic anisotropy and soft exchange
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Applied Physics
- Tillämpad fysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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