Negative Magnetoresistance in Hopping Regime of Lightly Doped Thermoelectric SnSe.

ABSTRACT: Semiconducting SnSe, an analog of black phosphorus, recently attracted great scientific interest due to a disputed report of a large thermoelectric figure of merit, which has not been reproduced subsequently. Here we concentrate on the low-temperature ground state. To gain a better understanding of the system, we present magneto-transport properties in high-quality single crystals of as-grown, lightly doped SnSe down to liquid helium temperatures. We show that SnSe behaves as a p-type doped semiconductor in the vicinity of a metal-insulator transition. Electronic transport at the lowest temperatures is dominated by the hopping mechanism. Negative magnetoresistance at low fields is well described by antilocalization, while positive magnetoresistance at higher fields is consistent with the s

SUBMITTER: Zoric M 

PROVIDER: S-EPMC10095749 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature