Prediction of spin polarized Fermi arcs in quasiparticle interference in CeBi
Abstract
We predict that CeBi in the ferromagnetic state is a Weyl semimetal. Our calculations within density functional theory show the existence of two pairs of Weyl nodes on the momentum path (0,0,kz) at 15meV above and 100meV below the Fermi level. Two corresponding Fermi arcs are obtained on surfaces of mirror-symmetric (010)-oriented slabs at E=15meV and both arcs are interrupted into three segments due to hybridization with a set of trivial surface bands. By studying the spin texture of surface states, we find the two Fermi arcs are strongly spin polarized but in opposite directions, which can be detected by spin-polarized ARPES measurements. Here, our theoretical study of quasiparticle interference (QPI) for a nonmagnetic impurity at the Bi site also reveals several features related to the Fermi arcs. Specifically, we predict that the spin polarization of the Fermi arcs leads to a bifurcation-shaped feature only in the spin-dependent QPI spectrum, serving as a fingerprint of the Weyl nodes.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Hangzhou Normal Univ. (China)
- Zhejiang Univ., Hangzhou (China)
- Harvard Univ., Cambridge, MA (United States)
- Ames Lab., and Iowa State Univ., Ames, IA (United States)
- Publication Date:
- Research Org.:
- Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT); Energy Frontier Research Centers (EFRC) (United States). Center for the Advancement of Topological Semimetals (CATS); Ames Lab., Ames, IA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES); Swiss National Science Foundation (SNF)
- OSTI Identifier:
- 1760613
- Alternate Identifier(s):
- OSTI ID: 1769021
- Report Number(s):
- LA-UR-20-26486; IS-J-10,431
Journal ID: ISSN 2469-9950; TRN: US2206034
- Grant/Contract Number:
- 89233218CNA000001; AC02-07CH11358
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 102; Journal Issue: 23; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Material Science; Local density of states; Surface states; Topological materials; Weyl fermions
Citation Formats
Huang, Zhao, Lane, Christopher A., Cao, Chao, Zhi, Guo-Xiang, Liu, Yu, Matt, Christian E., Kuthanazhi, Brinda, Canfield, Paul C., Yarotski, Dmitry Anatolievitch, Taylor, Antoinette Jane, and Zhu, Jian-Xin. Prediction of spin polarized Fermi arcs in quasiparticle interference in CeBi. United States: N. p., 2020.
Web. doi:10.1103/physrevb.102.235167.
Huang, Zhao, Lane, Christopher A., Cao, Chao, Zhi, Guo-Xiang, Liu, Yu, Matt, Christian E., Kuthanazhi, Brinda, Canfield, Paul C., Yarotski, Dmitry Anatolievitch, Taylor, Antoinette Jane, & Zhu, Jian-Xin. Prediction of spin polarized Fermi arcs in quasiparticle interference in CeBi. United States. https://doi.org/10.1103/physrevb.102.235167
Huang, Zhao, Lane, Christopher A., Cao, Chao, Zhi, Guo-Xiang, Liu, Yu, Matt, Christian E., Kuthanazhi, Brinda, Canfield, Paul C., Yarotski, Dmitry Anatolievitch, Taylor, Antoinette Jane, and Zhu, Jian-Xin. Thu .
"Prediction of spin polarized Fermi arcs in quasiparticle interference in CeBi". United States. https://doi.org/10.1103/physrevb.102.235167. https://www.osti.gov/servlets/purl/1760613.
@article{osti_1760613,
title = {Prediction of spin polarized Fermi arcs in quasiparticle interference in CeBi},
author = {Huang, Zhao and Lane, Christopher A. and Cao, Chao and Zhi, Guo-Xiang and Liu, Yu and Matt, Christian E. and Kuthanazhi, Brinda and Canfield, Paul C. and Yarotski, Dmitry Anatolievitch and Taylor, Antoinette Jane and Zhu, Jian-Xin},
abstractNote = {We predict that CeBi in the ferromagnetic state is a Weyl semimetal. Our calculations within density functional theory show the existence of two pairs of Weyl nodes on the momentum path (0,0,kz) at 15meV above and 100meV below the Fermi level. Two corresponding Fermi arcs are obtained on surfaces of mirror-symmetric (010)-oriented slabs at E=15meV and both arcs are interrupted into three segments due to hybridization with a set of trivial surface bands. By studying the spin texture of surface states, we find the two Fermi arcs are strongly spin polarized but in opposite directions, which can be detected by spin-polarized ARPES measurements. Here, our theoretical study of quasiparticle interference (QPI) for a nonmagnetic impurity at the Bi site also reveals several features related to the Fermi arcs. Specifically, we predict that the spin polarization of the Fermi arcs leads to a bifurcation-shaped feature only in the spin-dependent QPI spectrum, serving as a fingerprint of the Weyl nodes.},
doi = {10.1103/physrevb.102.235167},
journal = {Physical Review B},
number = 23,
volume = 102,
place = {United States},
year = {Thu Dec 31 00:00:00 EST 2020},
month = {Thu Dec 31 00:00:00 EST 2020}
}
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