Large magnetoresistance in the type-II Weyl semimetal
Abstract
In this paper, we report a magnetotransport study on type-II Weyl semimetal WP2 single crystals. Magnetoresistance exhibits a nonsaturating Hn field dependence (14 300% at 2 K and 9 T), whereas systematic violation of Kohler's rule was observed. Quantum oscillations reveal a complex multiband electronic structure. The cyclotron effective mass close to the mass of free electron me was observed in quantum oscillations along the b axis, while a reduced effective mass of about 0.5 me was observed in α-axis quantum oscillations, suggesting Fermi surface anisotropy. The temperature dependence of the resistivity shows a large upturn that cannot be explained by the multiband magnetoresistance of conventional metals. Finally, even though the crystal structure of WP2 is not layered as in transition-metal dichalcogenides, quantum oscillations suggest partial two-dimensional character.
- Authors:
-
- Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
- Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab.
- Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Stony Brook Univ., NY (United States). Dept. of Materials Science and Chemical Engineering
- Columbia Univ., New York, NY (United States). Dept. of Electrical Engineering; Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Electrical Engineering and Computer Science
- Renmin Univ. of China, Beijing (China). Dept. of Physics. Beijing Key Lab. of Opto-electronic Functional Materials and Micro-nano Devices
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Florida State Univ., Tallahassee, FL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- OSTI Identifier:
- 1412711
- Alternate Identifier(s):
- OSTI ID: 1389124
- Report Number(s):
- BNL-114525-2017-JA
Journal ID: ISSN 2469-9950; R&D Project: PM016; KC0201050; TRN: US1800328
- Grant/Contract Number:
- SC0012704; DMR-1157490
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 96; Journal Issue: 12; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; magnetoresistance; magnetotransport; semimetals; topological materials; condensed matter & materials physics
Citation Formats
Wang, Aifeng, Graf, D., Liu, Yu, Du, Qianheng, Zheng, Jiabao, Lei, Hechang, and Petrovic, C. Large magnetoresistance in the type-II Weyl semimetal WP2. United States: N. p., 2017.
Web. doi:10.1103/PhysRevB.96.121107.
Wang, Aifeng, Graf, D., Liu, Yu, Du, Qianheng, Zheng, Jiabao, Lei, Hechang, & Petrovic, C. Large magnetoresistance in the type-II Weyl semimetal WP2. United States. https://doi.org/10.1103/PhysRevB.96.121107
Wang, Aifeng, Graf, D., Liu, Yu, Du, Qianheng, Zheng, Jiabao, Lei, Hechang, and Petrovic, C. Mon .
"Large magnetoresistance in the type-II Weyl semimetal WP2". United States. https://doi.org/10.1103/PhysRevB.96.121107. https://www.osti.gov/servlets/purl/1412711.
@article{osti_1412711,
title = {Large magnetoresistance in the type-II Weyl semimetal WP2},
author = {Wang, Aifeng and Graf, D. and Liu, Yu and Du, Qianheng and Zheng, Jiabao and Lei, Hechang and Petrovic, C.},
abstractNote = {In this paper, we report a magnetotransport study on type-II Weyl semimetal WP2 single crystals. Magnetoresistance exhibits a nonsaturating Hn field dependence (14 300% at 2 K and 9 T), whereas systematic violation of Kohler's rule was observed. Quantum oscillations reveal a complex multiband electronic structure. The cyclotron effective mass close to the mass of free electron me was observed in quantum oscillations along the b axis, while a reduced effective mass of about 0.5 me was observed in α-axis quantum oscillations, suggesting Fermi surface anisotropy. The temperature dependence of the resistivity shows a large upturn that cannot be explained by the multiband magnetoresistance of conventional metals. Finally, even though the crystal structure of WP2 is not layered as in transition-metal dichalcogenides, quantum oscillations suggest partial two-dimensional character.},
doi = {10.1103/PhysRevB.96.121107},
journal = {Physical Review B},
number = 12,
volume = 96,
place = {United States},
year = {Mon Sep 11 00:00:00 EDT 2017},
month = {Mon Sep 11 00:00:00 EDT 2017}
}
Web of Science
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