Largely Suppressed Magneto-Thermal Conductivity and Enhanced Magneto-Thermoelectric Properties in PtSn₄.

ABSTRACT: Highly conductive topological semimetals with exotic electronic structures offer fertile ground for the investigation of the electrical and thermal transport behavior of quasiparticles. Here, we find that the layer-structured Dirac semimetal PtSn₄ exhibits a largely suppressed thermal conductivity under a magnetic field. At low temperatures, a dramatic decrease in the thermal conductivity of PtSn₄ by more than two orders of magnitude is obtained at 9 T. Moreover, PtSn₄ shows both strong longitudinal and transverse thermoelectric responses under a magnetic field. Large power factor and Nernst power factor of approximately 80-100 μW·cm^-1·K^-2 are obtained around 15 K in various magnetic fields. As a result, the thermoelectric figur

SUBMITTER: Fu C 

PROVIDER: S-EPMC7166253 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature