吉首大学学报（自然科学版）2018，Vol.39Issue(3)：35-40,6.DOI:10.3969/j.cnki.jdxb.2018.03.008
交换场和非共振光对单层MoS2能带结构的调控
Manipulation of the Electronic Band Structure of Monolayer MoS2 in Presence of Exchange Field and Off-Resonant Light
摘要
Abstract
Utilizing the low energy effective Hamilton model from the tight-binding approximation ,we have investigated the electronic band structure of the monolayer MoS2in the presence of magnetic ex-change field and off-resonant circularly polarized light .T he obtained results show that ,the magnetic ex-change field can break and/or modulate the spin degeneracy of the conduction and/or valence bands ,and the band gaps around K point of the monolayer MoS2increase with the external off-resonant circularly polarized light induced effective energy ;while those around K′increase firstly and then decrease with the light field induced effective energy ,realizing the transition of semiconductor-metal-semiconductor .T here-fore ,the two-dimensional MoS2can be tuned to be new bandgap materials with excellent spin and opto-electrical properties .关键词
二硫化钼/磁近邻交换场/非共振圆偏振光/能带结构Key words
MoS2/magnetic exchange field/off-resonant light/electronic band structure分类
数理科学引用本文复制引用
张新成,廖文虎..交换场和非共振光对单层MoS2能带结构的调控[J].吉首大学学报（自然科学版）,2018,39(3):35-40,6.基金项目
国家自然科学基金资助项目(11664010) （11664010）
湖南省自然科学基金资助项目(2017JJ2217) （2017JJ2217）
湖南省自然科学基金资助青年项目(12JJ4003) （12JJ4003）
吉首大学校级科研项目(JDY16021) （JDY16021）
吉首大学研究生科研创新项目(JGY201763) （JGY201763）
