Strain tunable intrinsic ferromagnetic in 2D square CrBr2

Two-dimensional intrinsic magnetic materials with high Curie temperature (Tc) coexisting with 100% spin polarization are highly desirable for realizing promising spintronic devices. In the present work, the intrinsic magnetism of monolayer square CrBr2 is predicted by using first-principles calculat...

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Autores principales:	Fei Li, Yulu Ren, Wenhui Wan, Yong Liu, Yanfeng Ge
Formato:	article
Lenguaje:	EN
Publicado:	AIP Publishing LLC 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/1286ab9f70dc4c8bbd3c47522a2bcaf9
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spelling	oai:doaj.org-article:1286ab9f70dc4c8bbd3c47522a2bcaf92021-12-01T18:52:06ZStrain tunable intrinsic ferromagnetic in 2D square CrBr22158-322610.1063/5.0073663https://doaj.org/article/1286ab9f70dc4c8bbd3c47522a2bcaf92021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0073663https://doaj.org/toc/2158-3226Two-dimensional intrinsic magnetic materials with high Curie temperature (Tc) coexisting with 100% spin polarization are highly desirable for realizing promising spintronic devices. In the present work, the intrinsic magnetism of monolayer square CrBr2 is predicted by using first-principles calculations. The monolayer CrBr2 is an intrinsic ferromagnetic half-metal with the half-metallic gap of 1.58 eV. Monte Carlo simulations based on the Heisenberg model estimate Tc as 212 K. Furthermore, the large compressive strain makes CrBr2 undergo ferromagnetic–antiferromagnetic phase transition when the biaxial tensile strain larger than 9.3% leads to the emergence of semiconducting electronic structures. Our results show that the intrinsic half-metal with a high Tc and controllable magnetic properties endow monolayer square CrBr2 as a potential material for spintronic applications.Fei LiYulu RenWenhui WanYong LiuYanfeng GeAIP Publishing LLCarticlePhysicsQC1-999ENAIP Advances, Vol 11, Iss 11, Pp 115220-115220-6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Fei Li Yulu Ren Wenhui Wan Yong Liu Yanfeng Ge Strain tunable intrinsic ferromagnetic in 2D square CrBr2
description	Two-dimensional intrinsic magnetic materials with high Curie temperature (Tc) coexisting with 100% spin polarization are highly desirable for realizing promising spintronic devices. In the present work, the intrinsic magnetism of monolayer square CrBr2 is predicted by using first-principles calculations. The monolayer CrBr2 is an intrinsic ferromagnetic half-metal with the half-metallic gap of 1.58 eV. Monte Carlo simulations based on the Heisenberg model estimate Tc as 212 K. Furthermore, the large compressive strain makes CrBr2 undergo ferromagnetic–antiferromagnetic phase transition when the biaxial tensile strain larger than 9.3% leads to the emergence of semiconducting electronic structures. Our results show that the intrinsic half-metal with a high Tc and controllable magnetic properties endow monolayer square CrBr2 as a potential material for spintronic applications.
format	article
author	Fei Li Yulu Ren Wenhui Wan Yong Liu Yanfeng Ge
author_facet	Fei Li Yulu Ren Wenhui Wan Yong Liu Yanfeng Ge
author_sort	Fei Li
title	Strain tunable intrinsic ferromagnetic in 2D square CrBr2
title_short	Strain tunable intrinsic ferromagnetic in 2D square CrBr2
title_full	Strain tunable intrinsic ferromagnetic in 2D square CrBr2
title_fullStr	Strain tunable intrinsic ferromagnetic in 2D square CrBr2
title_full_unstemmed	Strain tunable intrinsic ferromagnetic in 2D square CrBr2
title_sort	strain tunable intrinsic ferromagnetic in 2d square crbr2
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/1286ab9f70dc4c8bbd3c47522a2bcaf9
work_keys_str_mv	AT feili straintunableintrinsicferromagneticin2dsquarecrbr2 AT yuluren straintunableintrinsicferromagneticin2dsquarecrbr2 AT wenhuiwan straintunableintrinsicferromagneticin2dsquarecrbr2 AT yongliu straintunableintrinsicferromagneticin2dsquarecrbr2 AT yanfengge straintunableintrinsicferromagneticin2dsquarecrbr2
_version_	1718404676192305152

Strain tunable intrinsic ferromagnetic in 2D square CrBr2

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