Large magnetoresistance in the monoclinic 2M WSe2

被引：8
作者：
Fang, Y. Q. [1 ,2 ]
Wang, D. [1 ]
Zhao, W. [1 ]
Huang, F. Q. [1 ,3 ]
机构：
[1] Chinese Acad Sci, State Key Lab High Performance Ceram & Super Fine, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
来源：
EPL | 2020年 / 131卷 / 01期
基金：
美国国家科学基金会;
关键词：
07; 85; -m; 75; 47; 71; 15;
D O I：
10.1209/0295-5075/131/10005
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
1 -phase transition metal dichalcogenides possess lots of intriguing physical properties including superconductivity, large magnetoresistance and topological surface state. Here, we investigated the electrical transport properties of 2M WSe2, which is constructed by WSe2 layers. We found that the 2M WSe2 has a high carrier mobility of at 5 K. Moreover, large non-saturated magnetoresistance (MR) of 2M WSe2 was observed to be up to 3500% at 2 K under a magnetic field of 9 T. The first-principle calculations show that 2M WSe2 displays a typical-semimetal band structure with the coexistence of electron pockets and hole pockets.
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页数：4
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