Drastic change of magnetic anisotropy in Fe3GeTe2 and Fe4GeTe2 monolayers under electric field studied by density functional theory

Abstract Magnetic anisotropy energy (MAE) is one of the most important properties in two-dimensional magnetism since the magnetization in two dimension is vulnerable to the spin rotational fluctuations. Using density functional theory calculation, we show that perpendicular electric field dramatical...

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Autores principales:	Dongwook Kim, Changhoon Lee, Bo Gyu Jang, Kyoo Kim, Ji Hoon Shim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8175ff7e89f642b392c0a2cb641d98e9
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spelling	oai:doaj.org-article:8175ff7e89f642b392c0a2cb641d98e92021-12-02T15:28:57ZDrastic change of magnetic anisotropy in Fe3GeTe2 and Fe4GeTe2 monolayers under electric field studied by density functional theory10.1038/s41598-021-96639-32045-2322https://doaj.org/article/8175ff7e89f642b392c0a2cb641d98e92021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96639-3https://doaj.org/toc/2045-2322Abstract Magnetic anisotropy energy (MAE) is one of the most important properties in two-dimensional magnetism since the magnetization in two dimension is vulnerable to the spin rotational fluctuations. Using density functional theory calculation, we show that perpendicular electric field dramatically enhances the in-plane and out-of-plane magnetic anisotropies in Fe3GeTe2 and Fe4GeTe2 monolayers, respectively, allowing the change of easy axis in both systems. The changes of the MAE under the electric field are understood as the result of charge redistribution inside the layer, which is available due to the three-dimensional (3D) network of Fe atoms in the monolayers. As a result, we suggest that due to the unique structure of FenGeTe2 compounds composed by peculiar 3D networks of metal atoms, the MAE can be dramatically changed by the external perpendicular electric field.Dongwook KimChanghoon LeeBo Gyu JangKyoo KimJi Hoon ShimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Dongwook Kim Changhoon Lee Bo Gyu Jang Kyoo Kim Ji Hoon Shim Drastic change of magnetic anisotropy in Fe3GeTe2 and Fe4GeTe2 monolayers under electric field studied by density functional theory
description	Abstract Magnetic anisotropy energy (MAE) is one of the most important properties in two-dimensional magnetism since the magnetization in two dimension is vulnerable to the spin rotational fluctuations. Using density functional theory calculation, we show that perpendicular electric field dramatically enhances the in-plane and out-of-plane magnetic anisotropies in Fe3GeTe2 and Fe4GeTe2 monolayers, respectively, allowing the change of easy axis in both systems. The changes of the MAE under the electric field are understood as the result of charge redistribution inside the layer, which is available due to the three-dimensional (3D) network of Fe atoms in the monolayers. As a result, we suggest that due to the unique structure of FenGeTe2 compounds composed by peculiar 3D networks of metal atoms, the MAE can be dramatically changed by the external perpendicular electric field.
format	article
author	Dongwook Kim Changhoon Lee Bo Gyu Jang Kyoo Kim Ji Hoon Shim
author_facet	Dongwook Kim Changhoon Lee Bo Gyu Jang Kyoo Kim Ji Hoon Shim
author_sort	Dongwook Kim
title	Drastic change of magnetic anisotropy in Fe3GeTe2 and Fe4GeTe2 monolayers under electric field studied by density functional theory
title_short	Drastic change of magnetic anisotropy in Fe3GeTe2 and Fe4GeTe2 monolayers under electric field studied by density functional theory
title_full	Drastic change of magnetic anisotropy in Fe3GeTe2 and Fe4GeTe2 monolayers under electric field studied by density functional theory
title_fullStr	Drastic change of magnetic anisotropy in Fe3GeTe2 and Fe4GeTe2 monolayers under electric field studied by density functional theory
title_full_unstemmed	Drastic change of magnetic anisotropy in Fe3GeTe2 and Fe4GeTe2 monolayers under electric field studied by density functional theory
title_sort	drastic change of magnetic anisotropy in fe3gete2 and fe4gete2 monolayers under electric field studied by density functional theory
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8175ff7e89f642b392c0a2cb641d98e9
work_keys_str_mv	AT dongwookkim drasticchangeofmagneticanisotropyinfe3gete2andfe4gete2monolayersunderelectricfieldstudiedbydensityfunctionaltheory AT changhoonlee drasticchangeofmagneticanisotropyinfe3gete2andfe4gete2monolayersunderelectricfieldstudiedbydensityfunctionaltheory AT bogyujang drasticchangeofmagneticanisotropyinfe3gete2andfe4gete2monolayersunderelectricfieldstudiedbydensityfunctionaltheory AT kyookim drasticchangeofmagneticanisotropyinfe3gete2andfe4gete2monolayersunderelectricfieldstudiedbydensityfunctionaltheory AT jihoonshim drasticchangeofmagneticanisotropyinfe3gete2andfe4gete2monolayersunderelectricfieldstudiedbydensityfunctionaltheory
_version_	1718387214238351360

Drastic change of magnetic anisotropy in Fe3GeTe2 and Fe4GeTe2 monolayers under electric field studied by density functional theory

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