Large magnetoresistance in the type-II Weyl semimetal
- 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
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.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Florida State Univ., Tallahassee, FL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- Grant/Contract Number:
- SC0012704; DMR-1157490
- OSTI ID:
- 1412711
- Alternate ID(s):
- OSTI ID: 1389124
- Report Number(s):
- BNL-114525-2017-JA; R&D Project: PM016; KC0201050; TRN: US1800328
- Journal Information:
- Physical Review B, Vol. 96, Issue 12; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Strong and Tunable Electrical Anisotropy in Type‐II Weyl Semimetal Candidate WP 2 with Broken Inversion Symmetry
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journal | September 2019 |
Galvanomagnetic properties of the putative type-II Dirac semimetal PtTe2
|
journal | July 2018 |
Magneto-conductivity of tilted type-I Weyl semimetals with different types of impurities
|
journal | April 2019 |
Topology of triple-point metals
|
journal | July 2019 |
Galvanomagnetic properties of the putative type-II Dirac semimetal PtTe$_2$ | text | January 2018 |
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