Intrinsic valley polarization of magnetic VSe2 monolayers

Journal of Physics. Condensed Matter : an Institute of Physics Journal
Jian LiuSheng Meng

Abstract

Intrinsic valley polarization can be obtained in VSe2 monolayers with broken inversion symmetry and time reversal symmetry. First-principles investigations reveal that the magnitude of the valley splitting in magnetic VSe2 induced by spin-orbit coupling reaches as high as 78.2 meV and can be linearly tuned by biaxial strain. Besides conventional polarized light, hole doping or illumination with light of proper frequency can offer effective routes to realize valley polarization. Moreover, spin-orbit coupling in monolayer VSe2 breaks not only the valley degeneracy but also the three-fold rotational symmetry in band structure. The intrinsic and tunable valley splitting and the breaking of optical isotropy bring additional benefits to valleytronic and optoelectronic applications.

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Citations

May 6, 2020·Nanoscale Research Letters·Jian GuoJunyong Kang
Mar 12, 2021·Small·Jianwei SuTianyou Zhai
Nov 8, 2018·The Journal of Physical Chemistry Letters·Hang LiuSheng Meng
Jun 27, 2019·Nano Letters·Hongtao LiuHong-Jun Gao
Jul 26, 2019·The Journal of Physical Chemistry Letters·Xilong XuYing Dai
Sep 29, 2021·ACS Nano·Xiong WangXiaodong Cui

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