Magneto-transport in a binary alloy ring

TL;DR

This paper investigates magneto-transport in a binary alloy ring under Aharonov-Bohm flux, analyzing persistent current and electron transport, and explores potential semiconductor applications.

Contribution

It provides analytical insights into persistent current behavior and examines electron transport with impurity effects in alloy rings, proposing semiconductor functionalities.

Findings

Persistent current depends on electron concentration and flux.

System can act as p-type or n-type semiconductor.

Impurities influence transport properties.

Abstract

Magneto-transport properties are investigated in a binary alloy ring subjected to an Aharonov-Bohm (AB) flux \phi within a single-band non-interacting tight-binding framework. In the first part, we expose analytically the behavior of persistent current in an isolated ordered binary alloy ring as functions of electron concentration N_e and AB flux \phi. While, in the second part of the article, we discuss electron transport properties through a binary alloy ring attached to two semi-infinite one-dimensional metallic electrodes. The effect of impurities is also analyzed. From our study we propose that under suitable choices of the parameter values the system can act as a p-type or an n-type semiconductor.