Effective velocities of polaron spin states in monolayer transition metal dichalcogenides. (13th May 2021)

• Record Type: Journal Article
• Authors: Sun, Yong; Ma, Xu-Fei; Liu, Xiao-Yi; Cui, Yu; Deng, Jia-Pei; Xiao, Yao; Li, Zhi-Qing; Wang, Zi-Wu
• Is Part Of: Journal of physics. Volume 33:Number 23(2021)
• Publication Date: 2021-05-13
• Subjects: polaron spin states -- polaron velocity -- two-dimensional material; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/abf596
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: We propose a theoretical model for studying the effective velocities of polaron spin states in monolayer transition metal dichalcogenides (TMDS) on the substrate. It is found that the effective velocity of polaron shows the splitting with different magnitudes due to the Rashba spin–orbit coupling, which results in the reversed distribution of the effective velocities of polaron spin states. Moreover, the reversed points depend on the truncated wave-vector of optical phonon and can be modulated by the polarity of substrate and the internal distance between monolayer TMDS and substrate. These theoretical results enlighten some simple ways to distinguish and modulate the polaron spin states in two-dimensional heterostructures.