Collective charge density wave motion in inhomogeneous mesoscopic systems

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

Research output: Contribution to journalArticlepeer-review

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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