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Scientific article
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English

Charge and low-frequency response of normal-superconducting heterostructures

Publication date2002
Abstract

The 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 potential. We present response functions in terms of functional derivatives of the scattering matrix. We discuss corrections to the Lindhard function due to the proximity of the superconductor. 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 like a ballistic wire, a resonator, and a quantum point contact.

Keywords
  • Mesoscopic systems and quantum hall effect
  • Superconductivity
  • Condensed matter
Citation (ISO format)
PILGRAM, Sebastian et al. Charge and low-frequency response of normal-superconducting heterostructures. In: Physical review. B, Condensed matter and materials physics, 2002, vol. 65, n° 45321, p. 8. doi: 10.1103/PhysRevB.65.045321
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ISSN of the journal1098-0121
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