First-principles Dzyaloshinskii–Moriya interaction in a non-collinear framework

Abstract We have derived an expression of the Dzyaloshinskii–Moriya interaction (DMI), where all the three components of the DMI vector can be calculated independently, for a general, non-collinear magnetic configuration. The formalism is implemented in a real space—linear muffin-tin orbital—atomic...

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Autores principales:	R. Cardias, A. Szilva, M. M. Bezerra-Neto, M. S. Ribeiro, A. Bergman, Y. O. Kvashnin, J. Fransson, A. B. Klautau, O. Eriksson, L. Nordström
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0420d393fced40fdb81c663c6f035df9
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spelling	oai:doaj.org-article:0420d393fced40fdb81c663c6f035df92021-12-02T16:08:53ZFirst-principles Dzyaloshinskii–Moriya interaction in a non-collinear framework10.1038/s41598-020-77219-32045-2322https://doaj.org/article/0420d393fced40fdb81c663c6f035df92020-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-77219-3https://doaj.org/toc/2045-2322Abstract We have derived an expression of the Dzyaloshinskii–Moriya interaction (DMI), where all the three components of the DMI vector can be calculated independently, for a general, non-collinear magnetic configuration. The formalism is implemented in a real space—linear muffin-tin orbital—atomic sphere approximation (RS-LMTO-ASA) method. We have chosen the Cr triangular trimer on Au(111) and Mn triangular trimers on Ag(111) and Au(111) surfaces as numerical examples. The results show that the DMI (module and direction) is drastically different between collinear and non-collinear states. Based on the relation between the spin and charge currents flowing in the system and their coupling to the non-collinear magnetic configuration of the triangular trimer, we demonstrate that the DMI interaction can be significant, even in the absence of spin-orbit coupling. This is shown to emanate from the non-collinear magnetic structure, that can induce significant spin and charge currents even with spin-orbit coupling is ignored.R. CardiasA. SzilvaM. M. Bezerra-NetoM. S. RibeiroA. BergmanY. O. KvashninJ. FranssonA. B. KlautauO. ErikssonL. NordströmNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-13 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q R. Cardias A. Szilva M. M. Bezerra-Neto M. S. Ribeiro A. Bergman Y. O. Kvashnin J. Fransson A. B. Klautau O. Eriksson L. Nordström First-principles Dzyaloshinskii–Moriya interaction in a non-collinear framework
description	Abstract We have derived an expression of the Dzyaloshinskii–Moriya interaction (DMI), where all the three components of the DMI vector can be calculated independently, for a general, non-collinear magnetic configuration. The formalism is implemented in a real space—linear muffin-tin orbital—atomic sphere approximation (RS-LMTO-ASA) method. We have chosen the Cr triangular trimer on Au(111) and Mn triangular trimers on Ag(111) and Au(111) surfaces as numerical examples. The results show that the DMI (module and direction) is drastically different between collinear and non-collinear states. Based on the relation between the spin and charge currents flowing in the system and their coupling to the non-collinear magnetic configuration of the triangular trimer, we demonstrate that the DMI interaction can be significant, even in the absence of spin-orbit coupling. This is shown to emanate from the non-collinear magnetic structure, that can induce significant spin and charge currents even with spin-orbit coupling is ignored.
format	article
author	R. Cardias A. Szilva M. M. Bezerra-Neto M. S. Ribeiro A. Bergman Y. O. Kvashnin J. Fransson A. B. Klautau O. Eriksson L. Nordström
author_facet	R. Cardias A. Szilva M. M. Bezerra-Neto M. S. Ribeiro A. Bergman Y. O. Kvashnin J. Fransson A. B. Klautau O. Eriksson L. Nordström
author_sort	R. Cardias
title	First-principles Dzyaloshinskii–Moriya interaction in a non-collinear framework
title_short	First-principles Dzyaloshinskii–Moriya interaction in a non-collinear framework
title_full	First-principles Dzyaloshinskii–Moriya interaction in a non-collinear framework
title_fullStr	First-principles Dzyaloshinskii–Moriya interaction in a non-collinear framework
title_full_unstemmed	First-principles Dzyaloshinskii–Moriya interaction in a non-collinear framework
title_sort	first-principles dzyaloshinskii–moriya interaction in a non-collinear framework
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/0420d393fced40fdb81c663c6f035df9
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First-principles Dzyaloshinskii–Moriya interaction in a non-collinear framework

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