Large linear magnetoresistance and magnetothermopower in layered SrZnSb${}_2$

Abstract

We report the large linear magnetoresistance ($\sim 300\%$ in 9 T field at 2 K) and magnetothermopower in layered SrZnSb${}_2$ crystal with quasi-two-dimensional Sb layers. A crossover from the semiclassical parabolic field dependent magnetoresistance to linear field dependent magnetoresistance with increasing magnetic field is observed. The magnetoresistance behavior can be described very well by combining the semiclassical cyclotron contribution and the quantum limit magnetoresistance. Magnetic field also enhances the thermopower. Our results can be well understood by the magnetotransport of Dirac states in the bulk band structure.

arXiv comment3 pages, 3 figures

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• Non-trivial topology in a layered Dirac nodal-line semimetal candidate SrZnSb${}_2$ with distorted Sb square nets
• Superconductivity and Dirac Fermions in 112-phase Pnictides
• Linear magnetoconductivity in multiband spin-density-wave metals with nonideal nesting
• Progress, problems and prospects of room-temperature superconductivity