Vacancy-mediated anomalous phononic and electronic transport in defective half-Heusler ZrNiBi.

ABSTRACT: Studies of vacancy-mediated anomalous transport properties have flourished in diverse fields since these properties endow solid materials with fascinating photoelectric, ferroelectric, and spin-electric behaviors. Although phononic and electronic transport underpin the physical origin of thermoelectrics, vacancy has only played a stereotyped role as a scattering center. Here we reveal the multifunctionality of vacancy in tailoring the transport properties of an emerging thermoelectric material, defective n-type ZrNiBi. The phonon kinetic process is mediated in both propagating velocity and relaxation time: vacancy-induced local soft bonds lower the phonon velocity while acoustic-optical phonon coupling, anisotropic vibrations, and point-defect scattering induced by vacancy shorten the rela

SUBMITTER: Ren W 

PROVIDER: S-EPMC10404254 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature