@article{54d40939d4014f0ba0e057e7b5c9a9f7,
title = "Crystal growth and quantum oscillations in the topological chiral semimetal CoSi",
abstract = "We survey the electrical transport properties of single-crystalline, topological chiral semimetal CoSi grown via different methods. High-quality CoSi single crystals were found in the growth from a tellurium solution. The sample's high carrier mobility enables us to observe quantum oscillations (QOs) in its thermoelectrical signals. Our analysis of QOs reveals two spherical Fermi surfaces around the R point in its Brillouin zone corner. The extracted Berry phases of these electron orbits are consistent with the -2 chiral charge as reported in density functional theory (DFT) calculations. A detailed analysis of the QOs reveals that the spin-orbit-coupling-induced band splitting is less than 2 meV near the Fermi level, one order of magnitude smaller than our DFT calculation. We also report a large phonon-drag-induced Nernst effect in CoSi at intermediate temperatures.",
author = "Xitong Xu and Xirui Wang and Cochran, {Tyler A.} and Sanchez, {Daniel S.} and Guoqing Chang and Ilya Belopolski and Guangqiang Wang and Yiyuan Liu and Tien, {Hung Ju} and Xin Gui and Weiwei Xie and Hasan, {M. Zahid} and Chang, {Tay Rong} and Shuang Jia",
note = "Funding Information: This work was supported by the National Natural Science Foundation of China Grants No. U1832214 and No.11774007, the National Key R&D Program of China (Grant No. 2018YFA0305601), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB28000000). T.-R.C. was supported by the Young Scholar Fellowship Program of the Ministry of Science and Technology (MOST) in Taiwan under MOST Grant for the Columbus Program No. MOST108-2636-M-006-002, National Cheng Kung University, Taiwan, and the National Center for Theoretical Sciences (NCTS), Taiwan. This work is supported partially by MOST, Taiwan, Grant No. MOST 107-2627-E-006-001. Work at Princeton and Princeton-led ARPES measurements were supported by the U.S. Department of Energy under Basic Energy Sciences (Grant No. DOE/BES DE-FG-02-05ER46200). M.Z.H. acknowledges visiting scientist support from Lawrence Berkeley National Laboratory. The authors thank V. Strokov for support at the ADRESS beamline of the Swiss Light Source at the Paul Scherrer Institute in Switzerland. W.X. at LSU was supported by a Beckman Young Investigator award. X.G. at LSU is supported by the National Science Foundation under Grant No. NSF-OIA-1832967. Publisher Copyright: {\textcopyright} 2019 American Physical Society.",
year = "2019",
month = jul,
day = "8",
doi = "10.1103/PhysRevB.100.045104",
language = "English (US)",
volume = "100",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "4",
}