Phase of Aharonov-Bohm oscillations in conductance of mesoscopic systems

P. Singha Deo; A. M. Jayannavar

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arXiv · cond-mat/9606062

Phase of Aharonov-Bohm oscillations in conductance of mesoscopic systems

P. Singha Deo·A. M. Jayannavar

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Abstract

Motivated by a recent experiment we analyze in detail the phase of Aharonov-Bohm oscillations across a 1D ring with a stub coupled to one of its arms, in the presence of a magnetic flux. We demonstrate that there are two kinds of conductance extremas. One class of them are fixed at particular flux values and can only change abruptly from a maxima to a minima as incident energy is varied. We show a different mechanism for such abrupt phase change in conductance oscillation. We demonstrate that these extremas can exhibit $``$phase locking". However, the second kind of extremas can shift continuously as the incident energy is varied.

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P. Singha Deo, A. M. Jayannavar. 1996-06-10. Phase of Aharonov-Bohm oscillations in conductance of mesoscopic systems. https://arxiv.org/abs/cond-mat/9606062

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