Electroresistance in multipolar antiferroelectric Cu₂Se semiconductor.

ABSTRACT: Electric field-induced changes in the electrical resistance of a material are considered essential and enabling processes for future efficient large-scale computations. However, the underlying physical mechanisms of electroresistance are currently remain largely unknown. Herein, an electrically reversible resistance change has been observed in the thermoelectric α-Cu₂Se. The spontaneous electric dipoles formed by Cu⁺ ions displaced from their positions at the centers of Se-tetrahedrons in the ordered α-Cu₂Se phase are examined, and α-Cu₂Se phase is identified to be a multipolar antiferroelectric semiconductor. When exposed to the applied voltage, a reversible switching of crystalline domains aligned parallel to the polar axis results in an observ

SUBMITTER: Bai H 

PROVIDER: S-EPMC8664818 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature