Observation of maximum supercurrent quantization in a superconducting quantum point contact

Hideaki Takayanagi, Tatsushi Akazaki, Junsaku Nitta

Research output: Contribution to journalArticlepeer-review

175 Citations (Scopus)

Abstract

We have confirmed the quantization of the critical current in a superconducting quantum point contact consisting of a split-gate superconductor-(two-dimensional electron gas)-superconductor junction. The critical current and conductance show stepwise changes as a function of the gate voltage. We also observed resonant structure resulting from quantum interference of quasiparticles at the step edge.

Original languageEnglish
Pages (from-to)3533-3536
Number of pages4
JournalPhysical Review Letters
Volume75
Issue number19
DOIs
Publication statusPublished - 1995 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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