Quasibound states at thresholds in multichannel impurity scattering.

Kim, Sang Wook and Park, Hwa-Kyun and Sim, H.-S. and Schomerus, Henning (2003) Quasibound states at thresholds in multichannel impurity scattering. Journal of Physics -London- a Mathematical and General, 36. pp. 1299-10682. ISSN 1361-6447

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Abstract

We investigate the threshold behaviour 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 behaviour of transmission resonances, and quasibound states and their boundary conditions in the general context of multichannel scatterings.

Item Type: Journal Article
Journal or Publication Title: Journal of Physics -London- a Mathematical and General
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3109
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 678
Deposited By: Dr Henning Schomerus
Deposited On: 31 Oct 2007
Refereed?: Yes
Published?: Published
Last Modified: 18 Aug 2019 00:55
URI: https://eprints.lancs.ac.uk/id/eprint/678

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