Magneto-transport and electronic structures of BaZnBi2

Yi-Yan Wang, Peng-Jie Guo, Qiao-He Yu, Sheng Xu, Kai Liu, Tian-Long Xia
2017 New Journal of Physics  
We report the magneto-transport properties and electronic structures of BaZnBi$_2$. BaZnBi$_2$ is a quasi-two-dimensional (2D) material with metallic behavior. The transverse magnetoresistance (MR) depends on magnetic field linearly and exhibits Shubnikov-de Haas (SdH) oscillation at low temperature and high field. The observed linear MR may originate from the disorder in samples or the edge conductivity in compensated two-component systems. The first-principles calculations reveal the absence
more » ... reveal the absence of stable gapless Dirac fermion. Combining with the trivial Berry phase extracted from SdH oscillation, BaZnBi$_2$ is suggested to be a topologically trivial semimetal. Nearly compensated electron-like Fermi surfaces (FSs) and hole-like FSs coexist in BaZnBi$_2$.
doi:10.1088/1367-2630/aa95e7 fatcat:d4bllt75lzcwvgfgf3uzk63hau