Coupling of superconductivity with low-dimensional electron systems in mesoscopic geometries

F. Rahman, Trevor Thornton

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

We describe effects seen in coupled superconductor-semiconductor hybrid systems in various mesoscopic geometries. The hybrid structures consist of niobium films on high mobility InAs:GaSb quantum wells which form high transparency, low-resistance interfaces exhibiting a variety of effects in their resistive transitions and differential resistance scans. Grating structures show effects arising out of the confinement of quasiparticles while dot arrays show evidence of proximity induced superconductivity scaling as the density of dots. Superconducting dots deposited on narrow semiconductor channels show suppression of Andreev reflection which we attribute to interdot diffuse scattering from the walls of the channel.

Original languageEnglish (US)
Pages (from-to)767-774
Number of pages8
JournalSuperlattices and Microstructures
Volume25
Issue number5
DOIs
StatePublished - May 1999

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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