Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2012-02-29
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.
Dutta Paramita
Karmakar S. N.
Maiti Santanu K.
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