Acoustoconductance of quantum contacts

We describe theoretically the acoustoconductance (AC) of quantum contacts. One characteristic of a contact which distinguishes it from a long, uniform wire is a strong, energy-dependent transmission probability. This has several consequences for AC. Electrons which are forward scattered by phonons c...

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Bibliographic Details
Published in:arXiv.org 1998-08
Main Authors: Blencowe, M P, Shik, A Y
Format: Article
Language:English
Subjects:
Backscattering
Electrons
Energy transmission
Phonons
Resistance
Online Access:Get full text
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Summary:We describe theoretically the acoustoconductance (AC) of quantum contacts. One characteristic of a contact which distinguishes it from a long, uniform wire is a strong, energy-dependent transmission probability. This has several consequences for AC. Electrons which are forward scattered by phonons can contribute to AC and, furthermore, AC can have positive sign (i.e. a conductance-increase under the influence of phonons). By contrast, for uniform wires only backscattered electrons contribute to AC which always has negative sign.
ISSN:2331-8422
DOI:10.48550/arxiv.9808033