Valley splitting in the transition-metal dichalcogenide monolayer via atom adsorption

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Xiaofang Chen
  • Liangshuai Zhong
  • Xiao Li
  • Jingshan Qi

Detail(s)

Original languageEnglish
Pages (from-to)2188-2194
Journal / PublicationNanoscale
Volume9
Issue number6
Publication statusPublished - 14 Feb 2017
Externally publishedYes

Abstract

In this letter we study the valley degeneracy splitting of the transition-metal dichalcogenide monolayer by first-principles calculations. The local magnetic moments are introduced into the system when the transition-metal atoms are adsorbed on the monolayer surface. The Zeeman effect arising from the local magnetic moment at transition-metal atom sites lifts the valley degeneracy. Anomalous charge, spin and valley Hall effects can be accessed due to valley splitting when we can only excite carriers of one valley. The valley splitting depends on the direction of magnetization and thus can be tuned continuously by an external magnetic field. This tunable valley splitting offers a practical avenue for exploring device paradigms based on the spin and valley degrees of freedom. © The Royal Society of Chemistry

Citation Format(s)

Valley splitting in the transition-metal dichalcogenide monolayer via atom adsorption. / Chen, Xiaofang; Zhong, Liangshuai; Li, Xiao; Qi, Jingshan.

In: Nanoscale, Vol. 9, No. 6, 14.02.2017, p. 2188-2194.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review