The interfaces of bismuth-antymony bicrystals: potential applications of devices based on them

Abstract

The Bi1-xSbx(0 < x <0.2) alloy system has long been studied in detail because of remarkable low-temperature properties and unique thermoelectric features below room temperatures. Recent investigations of these alloys have highlighted some important topics:first experimentally observed 3D Z2 topological insulator, possible revelation of a three-dimensional Dirac semimetal, charge quantum Hall fractionalization, etc., which greatly expanded the field of application of these materials.