Electronic structure in a transition metal dipnictide TaAs 2
Abstract
Abstract The family of transition-metal dipnictides has been of theoretical and experimental interest because this family hosts topological states and extremely large magnetoresistance (MR). Recently, , a member of this family, has been predicted to support a topological crystalline insulating state. Here, by using high-resolution angle-resolved photoemission spectroscopy (ARPES), we reveal both closed and open pockets in the metallic Fermi surface (FS) and linearly dispersive bands on the ( ) surface, along with the presence of extreme MR observed from magneto-transport measurements. A comparison of the ARPES results with first-principles computations shows that the linearly dispersive bands on the measured surface of are trivial bulk bands. The absence of symmetry-protected surface state on the ( ) surface indicates its topologically dark nature. The presence of open FS features suggests that the open-orbit fermiology could contribute to the extremely large MR of .
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)US Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF)
- OSTI Identifier:
- 2205682
- Alternate Identifier(s):
- OSTI ID: 2202987; OSTI ID: 2332761
- Grant/Contract Number:
- AC02-05CH11231; FA9550-20-1-0322; DMR-1847962
- Resource Type:
- Published Article
- Journal Name:
- Journal of Physics. Condensed Matter
- Additional Journal Information:
- Journal Name: Journal of Physics. Condensed Matter Journal Volume: 36 Journal Issue: 7; Journal ID: ISSN 0953-8984
- Publisher:
- IOP Publishing
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; angle-resolved photoemission spectroscopy; electronic structure; transition metal dipnictide; extreme magnetoresistance
Citation Formats
Regmi, Sabin, Huang, Cheng-Yi, Khan, Mojammel A., Wang, Baokai, Pradhan Sakhya, Anup, Hosen, M. Mofazzel, Thompson, Jesse, Singh, Bahadur, Denlinger, Jonathan D., Ishigami, Masahiro, Mitchell, J. F., Kaczorowski, Dariusz, Bansil, Arun, and Neupane, Madhab. Electronic structure in a transition metal dipnictide TaAs 2. United Kingdom: N. p., 2023.
Web. doi:10.1088/1361-648X/ad04fc.
Regmi, Sabin, Huang, Cheng-Yi, Khan, Mojammel A., Wang, Baokai, Pradhan Sakhya, Anup, Hosen, M. Mofazzel, Thompson, Jesse, Singh, Bahadur, Denlinger, Jonathan D., Ishigami, Masahiro, Mitchell, J. F., Kaczorowski, Dariusz, Bansil, Arun, & Neupane, Madhab. Electronic structure in a transition metal dipnictide TaAs 2. United Kingdom. https://doi.org/10.1088/1361-648X/ad04fc
Regmi, Sabin, Huang, Cheng-Yi, Khan, Mojammel A., Wang, Baokai, Pradhan Sakhya, Anup, Hosen, M. Mofazzel, Thompson, Jesse, Singh, Bahadur, Denlinger, Jonathan D., Ishigami, Masahiro, Mitchell, J. F., Kaczorowski, Dariusz, Bansil, Arun, and Neupane, Madhab. Tue .
"Electronic structure in a transition metal dipnictide TaAs 2". United Kingdom. https://doi.org/10.1088/1361-648X/ad04fc.
@article{osti_2205682,
title = {Electronic structure in a transition metal dipnictide TaAs 2},
author = {Regmi, Sabin and Huang, Cheng-Yi and Khan, Mojammel A. and Wang, Baokai and Pradhan Sakhya, Anup and Hosen, M. Mofazzel and Thompson, Jesse and Singh, Bahadur and Denlinger, Jonathan D. and Ishigami, Masahiro and Mitchell, J. F. and Kaczorowski, Dariusz and Bansil, Arun and Neupane, Madhab},
abstractNote = {Abstract The family of transition-metal dipnictides has been of theoretical and experimental interest because this family hosts topological states and extremely large magnetoresistance (MR). Recently, T a A s 2 , a member of this family, has been predicted to support a topological crystalline insulating state. Here, by using high-resolution angle-resolved photoemission spectroscopy (ARPES), we reveal both closed and open pockets in the metallic Fermi surface (FS) and linearly dispersive bands on the ( 2 ‾ 01 ) surface, along with the presence of extreme MR observed from magneto-transport measurements. A comparison of the ARPES results with first-principles computations shows that the linearly dispersive bands on the measured surface of T a A s 2 are trivial bulk bands. The absence of symmetry-protected surface state on the ( 2 ‾ 01 ) surface indicates its topologically dark nature. The presence of open FS features suggests that the open-orbit fermiology could contribute to the extremely large MR of T a A s 2 .},
doi = {10.1088/1361-648X/ad04fc},
journal = {Journal of Physics. Condensed Matter},
number = 7,
volume = 36,
place = {United Kingdom},
year = {Tue Nov 14 00:00:00 EST 2023},
month = {Tue Nov 14 00:00:00 EST 2023}
}
https://doi.org/10.1088/1361-648X/ad04fc
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