Magnetotransport properties of
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
We report magnetotransport and de Haas–van Alphen (dHvA) effect studies on MoP2 single crystals, predicted to be a type- II Weyl semimetal with four pairs of robust Weyl points located below the Fermi level and long Fermi arcs. The temperature dependence of resistivity shows a peak before saturation, which does not move with magnetic field. Large nonsaturating magnetoresistance (MR) was observed, and the field dependence of MR exhibits a crossover from semiclassical weak-field B2 dependence to the high-field linear-field dependence, indicating the presence of Dirac linear energy dispersion. In addition, a systematic violation of Kohler's rule was observed, consistent with multiband electronic transport. Strong spin-orbit coupling splitting has an effect on dHvA measurements whereas the angular-dependent dHvA orbit frequencies agree well with the calculated Fermi surface. The cyclotron effective mass ~1.6me indicates the bands might be trivial, possibly since the Weyl points are located below the Fermi level.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1425073
- Alternate ID(s):
- OSTI ID: 1406650
- Report Number(s):
- BNL-203216-2018-JAAM; PRBMDO; TRN: US1802031
- Journal Information:
- Physical Review B, Vol. 96, Issue 19; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Extremely large magnetoresistance in the antiferromagnetic semimetal GdSb
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journal | January 2018 |
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