Pumping in quantum dots and non-Abelian matrix Berry phases

Hwang, N. Y.; Kim, S. C.; Park, P. S.; Yang, S. -R. Eric

doi:10.1016/j.ssc.2008.01.003

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Pumping in quantum dots and non-Abelian matrix Berry phases

Hwang, N. Y.;
Kim, S. C.;
Park, P. S.;
Yang, S. -R. Eric

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4

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5

초록

We have investigated pumping in quantum dots from the perspective of non-Abelian (matrix) Berry phases by solving the time-dependent Schrodinger equation exactly for adiabatic changes. Our results demonstrate that a pumped charge is related to the presence of a finite matrix Berry phase. When consecutive adiabatic cycles are performed the pumped charge of each cycle is different from that of the previous ones. (C) 2008 Elsevier Ltd. All rights reserved.

키워드

nanostructures; semiconductors; electronic; ELECTRON PUMP; QUANTIZATION; TRANSPORT

제목: Pumping in quantum dots and non-Abelian matrix Berry phases

저자: Hwang, N. Y.; Kim, S. C.; Park, P. S.; Yang, S. -R. Eric

DOI: 10.1016/j.ssc.2008.01.003

발행일: 2008-03

유형: Article

저널명: Solid State Communications

권: 145

호: 11-12

페이지: 515 ~ 519