Large Spin-Valley Polarization in Monolayer MoTe2 on Top of EuO(111).

Zhang, Qingyun; Yang, Shengyuan A; Mi, Wenbo; Cheng, Yingchun; Schwingenschlögl, Udo · Adv Mater · 2016

basic_science · Level V

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Abstract

The electronic properties of monolayer MoTe2 on top of EuO(111) are studied by first-principles calculations. Strong spin polarization is induced in MoTe2 , which results in a large valley polarization. In a longitudinal electric field this will result in a valley and spin-polarized charge Hall effect. The direction of the Hall current as well as the valley and spin polarizations can be tuned by an external magnetic field.