Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Tunneling in Fermi Systems with Quadratic Band Crossing Points

Version 1 : Received: 4 June 2020 / Approved: 5 June 2020 / Online: 5 June 2020 (14:13:37 CEST)

A peer-reviewed article of this Preprint also exists.

Journal reference: Annals of Physics 2020, 419, 168235
DOI: 10.1016/j.aop.2020.168235

Abstract

We investigate the tunneling of quasiparticles through a potential barrier of finite height and width, in a system with a band structure consisting of a quadratic band crossing point (QBCP). We compute the results of the transmission coefficient at various incident angles, and also the conductivity and the Fano factor. We discuss the distinguishing signatures of these transport properties in comparison with other semimetals, as well as electrons in normal metals.

Subject Areas

quadratic band touching semimetal; transmission coefficient

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