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First-principles pr...
First-principles prediction of sub-10-nm skyrmions in Pd/Fe bilayers on Rh(111)
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- Haldar, Soumyajyoti (author)
- University of Kiel, Germany
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- von Malottki, Stephan (author)
- University of Kiel, Germany
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- Meyer, Sebastian (author)
- University of Kiel, Germany
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- Bessarab, Pavel F. (author)
- University of Iceland, Iceland;ITMO University, Russia
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- Heinze, Stefan (author)
- University of Kiel, Germany
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(creator_code:org_t)
- American Physical Society, 2018
- 2018
- English.
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In: Physical Review B. - : American Physical Society. - 2469-9950 .- 2469-9969. ; 98:6
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We show that stable skyrmions with diameters of a few nanometers can emerge in atomic Pd/Fe bilayers on the Rh(111) surface. Based on density functional theory we calculate the exchange and the Dzyaloshinskii-Moriya interaction as well as the magnetocrystalline anisotropy energy. The latter two terms are driven by spin-orbit coupling and significantly reduced compared to Pd/Fe bilayers on Ir(111) as expected since Rh and Ir are isoelectronic 4d and 5d transition metals. However, there is still a spin spiral ground state at zero magnetic field. Atomistic spin dynamics simulations show that a skyrmion phase occurs at small magnetic fields of ∼1 T. Skyrmion diameters amount to 2-8 nm and skyrmion lifetimes are up to 1 h at temperatures of 25-45 K.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Condensed Matter Physics
- Kondenserade materians fysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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