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Title: Magnetotransport properties of MoP 2

We report magnetotransport and de Haas–van Alphen (dHvA) effect studies on MoP 2 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 B 2 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 ~1.6m e indicates the bands might be trivial, possibly since the Weyl points are located below the Fermi level.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
Publication Date:
Report Number(s):
BNL-203216-2018-JAAM
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1802031
Grant/Contract Number:
SC0012704
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 19; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1425073
Alternate Identifier(s):
OSTI ID: 1406650

Wang, Aifeng, Graf, D., Stein, Aaron, Liu, Yu, Yin, Weigui, and Petrovic, Cedomir. Magnetotransport properties of MoP2. United States: N. p., Web. doi:10.1103/PhysRevB.96.195107.
Wang, Aifeng, Graf, D., Stein, Aaron, Liu, Yu, Yin, Weigui, & Petrovic, Cedomir. Magnetotransport properties of MoP2. United States. doi:10.1103/PhysRevB.96.195107.
Wang, Aifeng, Graf, D., Stein, Aaron, Liu, Yu, Yin, Weigui, and Petrovic, Cedomir. 2017. "Magnetotransport properties of MoP2". United States. doi:10.1103/PhysRevB.96.195107.
@article{osti_1425073,
title = {Magnetotransport properties of MoP2},
author = {Wang, Aifeng and Graf, D. and Stein, Aaron and Liu, Yu and Yin, Weigui and Petrovic, Cedomir},
abstractNote = {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.},
doi = {10.1103/PhysRevB.96.195107},
journal = {Physical Review B},
number = 19,
volume = 96,
place = {United States},
year = {2017},
month = {11}
}