Charge and low-frequency response of normal-superconducting heterostructures .

Pilgram, S. and Schomerus, H. and Martin, A. M. and Buttiker, M. (2002) Charge and low-frequency response of normal-superconducting heterostructures . Physical review B, 65. 045321. ISSN 1550-235X

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Charge distribution is a basic aspect of electrical transport. In this work we investigate the self-consistent charge response of normal-superconducting heterostructures. Of interest is the variation of the charge density due to voltage changes at contacts and due to changes in the electrostatic potential. We present response functions in terms of functional derivatives of the scattering matrix. We use these results to find the dynamic conductance matrix to lowest order in frequency. We illustrate similarities and differences between normal systems and heterostructures for specific examples such as a ballistic wire and a quantum point contact.

Item Type: Journal Article
Journal or Publication Title: Physical review B
Departments: Faculty of Science and Technology > Physics
Faculty of Arts & Social Sciences > Politics & International Relations (Merged into PPR 2010-08-01)
ID Code: 685
Deposited By: Dr Henning Schomerus
Deposited On: 31 Oct 2007
Refereed?: Yes
Published?: Published
Last Modified: 22 Feb 2020 01:41

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