Anomalous magnetic field dependence of differential resistance in a superconducting NbInAsNb junction

Junsaku Nitta, Tatsushi Akazaki, Hideaki Takayanagi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The differential resistance in an InAs-inserted-channel InAlAs/InGaAs heterostructure coupled superconducting junction is enhanced within the Nb superconducting gap energy by applying a magnetic field. The enhancement saturates under a magnetic field of several mT. This behavior suggests that the pair-potential in the InAs-channel is induced by the superconducting proximity effect. The magnetic field reduces the penetration of the pair-potential and the Andreev reflection probability, which causes the enhancement of the differential resistance.

Original languageEnglish
Pages (from-to)1757-1758
Number of pages2
JournalPhysica B: Physics of Condensed Matter
Volume194-196
Issue numberPART 2
DOIs
Publication statusPublished - 1994 Feb 2
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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