Anisotropic magneto-transport and magnetic properties of low-temperature phase of TaTe2

被引：30
|
作者：
Chen, Hongxiang [1 ,2 ]
Li, Zhilin [1 ,2 ]
Guo, Liwei [1 ,2 ]
Chen, Xiaolong [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Res & Dev Ctr Funct Crystals, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
[3] Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China
来源：
EPL | 2017年 / 117卷 / 02期
基金：
中国国家自然科学基金;
关键词：
CHARGE-DENSITY WAVES; MAGNETORESISTANCE;
D O I：
10.1209/0295-5075/117/27009
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
TaTe2 is a quasi-2D charge density wave (CDW) compound with distorted-1T-type structure exhibiting double- zigzag chains. Here we report the Fermi surface topology of a lowtemperature phase of TaTe2 (LT-TaTe2) by anisotropic magneto-transport and magnetic measurements on high-quality single crystals. An anomalous large linear magnetoresistance up to 140% at 3K in 9T was observed, suggesting the existence of a small Fermi pocket in the Dirac cone state in quantum transport models. Moreover, strong magnetic anisotropy was observed for B perpendicular to(001) and B parallel to (001). Angle-dependent magnetoresistance and de Hass-van Alphen oscillations suggest the anisotropy of the normal Fermi surface and the small Fermi pocket in Dirac cone state. Copyright (C) EPLA, 2017
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页数：7
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