Fabrication of Dirac semimetal Cd₃As₂ films and determination of their new quantum Hall state

Abstract

Dirac semimetals have a so-called Dirac cone in their three-dimensional bulk electronic structures. They also have a unique bulk–surface coupled electronic state. Consequently, they have attracted growing attention as a material system for next-generation electronics. In this review, we will explain the fundamental features of Cd₃As₂, a typical Dirac semimetal, and introduce various results ranging from the fabrication of high-quality thin films to the determination of a unique quantum Hall state. We will also summarize future prospects for possible applications.