Magnetotransport of single crystalline NbAs

被引：147

作者：

Ghimire, N. J. ^{[1
]}

Luo, Yongkang ^{[1
]}

Neupane, M. ^{[1
]}

Williams, D. J. ^{[1
]}

Bauer, E. D. ^{[1
]}

Ronning, F. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87544 USA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2015年 / 27卷 / 15期

关键词：

Weyl semimetal; magnetoresistance; mobility; NbAs; TOPOLOGICAL INSULATORS;

D O I：

10.1088/0953-8984/27/15/152201

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report transport measurement in zero and applied magnetic field on a single crystal of NbAs. Transverse and longitudinal magnetoresistance in the plane of this tetragonal structure does not saturate up to 9 T. In the transverse configuration (H parallel to c, I perpendicular to c) it is 230 000% at 2K. The Hall coefficient changes sign from hole-like at room temperature to electron-like below similar to 150 K. The electron carrier density and mobility calculated at 2K based on a single band approximation are 1.8 x 10(19) cm(-3) and 3.5 x 10(5) cm(2) Vs(-1), respectively. These values are similar to reported values for TaAs and NbP, and further emphasize that this class of noncentrosymmetric, transition-metal monopnictides is a promising family to explore the properties of Weyl semimetals and the consequences of their novel electronic structure.

引用

页数：4

共 23 条

[1]

[Anonymous], 2015, ARXIV150200251

[2]

[Anonymous], ARXIV150100755

[3]

Balents L., 2011, Physics, V4, P36, DOI DOI 10.1103/PHYSICS.4.36

[4] Weyl Semimetal in a Topological Insulator Multilayer [J].