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Quasibound states at thresholds in multichannel impurity scattering

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Publication:4466125

DOI10.1088/0305-4470/36/5/308zbMATH Open1066.81638arXivcond-mat/0203391OpenAlexW2124760790WikidataQ62581260 ScholiaQ62581260MaRDI QIDQ4466125

Author name not available (Why is that?)

Publication date: 9 June 2004

Published in: (Search for Journal in Brave)

Abstract: We investigate the threshold behavior of transmission resonances and quasibound states in the multichannel scattering problems of a one dimensional (1D) time-dependent impurity potential, and the related problem of a single impurity in a quasi 1D wire. It was claimed before in the literature that a quasibound state disappears when a transmission zero collides with the subband boundary. However, the transmission line shape, the Friedel sum rule, and the delay time show that the quasibound states still survive and affect the physical quantities. We discuss the relation between threshold behavior of transmission resonances, and quasibound states and their boundary conditions in the general context of multichannel scatterings.


Full work available at URL: https://arxiv.org/abs/cond-mat/0203391




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