Collective charge density wave motion in inhomogeneous mesoscopic systems

M. I. Visscher, B. Rejaei, G. E.W. Bauer

Research output: Contribution to journalArticle

Abstract

We investigate theoretically the collective charge density wave (CDW) motion in two inhomogeneous mesoscopic systems. Using the Keldysh formalism, we first show that the sliding motion in a superconductor/charge density wave/superconductor (S/C/S) junction acts as a non-linear shunting resistance parallel to the Josephson channel. Internal harmonic and sub-harmonic mode-locking of the CDW and Josephson frequencies causes sharp oscillations in the current-voltage characteristics and plateaus in the CDW conductance. Secondly, we show that the sliding motion in an ensemble of small Aharonov-Bohm rings is modulated by a half-flux quantum periodicity Φ0/2 = h/2e, consistent with recent experiments.

Original languageEnglish
Pages (from-to)490-495
Number of pages6
JournalPhysica B: Condensed Matter
Volume249-251
DOIs
Publication statusPublished - 1998 Jun 17
Externally publishedYes

Keywords

  • Aharonov-Bohm effect
  • Charge density waves
  • Josephson effect

ASJC Scopus subject areas

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

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