dc.contributor |
Háskóli Íslands |
dc.contributor |
University of Iceland |
dc.contributor.author |
Haldar, Soumyajyoti |
dc.contributor.author |
von Malottki, Stephan |
dc.contributor.author |
Meyer, Sebastian |
dc.contributor.author |
Bessarab, Pavel |
dc.contributor.author |
Heinze, Stefan |
dc.date.accessioned |
2019-02-04T11:15:25Z |
dc.date.available |
2019-02-04T11:15:25Z |
dc.date.issued |
2018-08-27 |
dc.identifier.citation |
Haldar, S., von Malottki, S., Meyer, S., Bessarab, P. F., & Heinze, S. (2018). First-principles prediction of sub-10-nm skyrmions in Pd/Fe bilayers on Rh(111). Physical Review B, 98(6), 060413. doi:10.1103/PhysRevB.98.060413 |
dc.identifier.issn |
2469-9950 |
dc.identifier.issn |
2469-9969 (eISSN) |
dc.identifier.uri |
https://hdl.handle.net/20.500.11815/1007 |
dc.description |
Publisher's version (útgefin grein) |
dc.description.abstract |
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. |
dc.description.sponsorship |
This work was supported by the European Unions Horizon
2020 research and innovation program under Grant Agreement
No. 665095 (FET-Open project MAGicSky). S.J.H. and S.H.
acknowledge the DFG via SFB677 for financial support.
P.F.B. acknowledges support from the Icelandic Research Fund
(Grants No. 163048-053 and No. 184949-051). We gratefully
acknowledge the computing time at the supercomputer of the
North-German Supercomputing Alliance (HLRN). |
dc.format.extent |
060413 |
dc.language.iso |
en |
dc.publisher |
American Physical Society (APS) |
dc.relation |
info:eu-repo/grantAgreement/EC/H2020/665095 |
dc.relation.ispartofseries |
Physical Review B;98(6) |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Skyrmions |
dc.subject |
Magnetic multilayers |
dc.subject |
Density functional theory |
dc.subject |
Landau-Lifshitz model |
dc.subject |
Segulmagn |
dc.subject |
Þéttefnisfræði |
dc.title |
First-principles prediction of sub-10-nm skyrmions in Pd/Fe bilayers on Rh(111) |
dc.type |
info:eu-repo/semantics/article |
dcterms.license |
©2018 American Physical Society |
dc.description.version |
Peer Reviewed |
dc.identifier.journal |
Physical Review B |
dc.identifier.doi |
10.1103/PhysRevB.98.060413 |
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) |