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Berry phase and persistent current in disordered mesoscopic rings | | Shiro Kawabata
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30 Aug 1999 | | Journal: | Phys. Rev. B 60 (1999) R8457-R8460 | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Disordered Systems and Neural Networks | cond-mat.mes-hall cond-mat.dis-nn quant-ph | | Affiliation: | ETL, Japan | | Abstract: | A novel quantum interference effect in disordered quasi-one-dimensional rings in the inhomogeneous magnetic field is reported. We calculate the canonical disorder averaged persistent current using the diagrammatic perturbation theory. It is shown that within the adiabatic regime the average current oscillates as a function of the geometric flux which is related to the Berry phase and the period becomes half the value of the case of a single one-dimensional ring. We also discuss the magnetic dephasing effect on the averaged current. | | Source: | arXiv, cond-mat/9908440 | | Services: | Forum | Review | PDF | Favorites | |
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