Features in Evanescent Aharonov-Bohm interferometry
介观与纳米尺度物理
2007-05-23 v2 材料科学
摘要
In this work we analyze an Aharonov-Bohm interferometer in the tunneling regime. In this regime, current magnification effect which arises in presence of transport currents is absent. A slight modification in the form of a quantum well incorporated in one of the arms leads to revival of current magnification. Systematics in magneto-conductance oscillations are observed in this evanescent wave geometry. In this framework we also see absence of Fano lineshapes in transmission resonances but once again one can recover these if the direct path supports propagating modes.
引用
@article{arxiv.cond-mat/0302160,
title = {Features in Evanescent Aharonov-Bohm interferometry},
author = {Colin Benjamin and A. M. Jayannavar},
journal= {arXiv preprint arXiv:cond-mat/0302160},
year = {2007}
}
备注
7 pages, 7 figures. Minor changes made. Accepted for publication in Phys. Rev. B