Valley polarization in magnetically doped single-layer transition-metal dichalcogenides

Yingchun Cheng, Qingyun Zhang, Udo Schwingenschlögl

Research output: Contribution to journalArticlepeer-review

108 Scopus citations

Abstract

We demonstrate that valley polarization can be induced and controlled in semiconducting single-layer transition-metal dichalcogenides by magnetic doping, which is important for spintronics, valleytronics, and photonics devices. As an example, we investigate Mn-doped MoS2 by first-principles calculations. We study how the valley polarization depends on the strength of the spin orbit coupling and the exchange interaction and discuss how it can be controlled by magnetic doping. Valley polarization by magnetic doping is also expected for other honeycomb materials with strong spin orbit coupling and the absence of inversion symmetry.
Original languageEnglish (US)
JournalPhysical Review B
Volume89
Issue number15
DOIs
StatePublished - Apr 28 2014

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