Magneto-transport in a binary alloy ring

Details Magneto-transport in a binary alloy ring Magneto-transport in a binary alloy ring

2012-02-29

arxiv.org/abs/1202.6519v3

Physics Letters A, Volume 376, Issue 18, 2 April 2012, Pages 1567-1572

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 8 figures

Scientific paper

10.1016/j.physleta.2012.03.043

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.

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