Mesoscopic charge-density-wave junctions

Mark I. Visscher, Gerrit E.W. Bauer

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

We investigate theoretically charge-density waves (CDW’s) in mesoscopic heterostructures for the configuration where the one-dimensional chains are oriented normal to the interfaces. Based on Bogoliubov-de Gennes equations and suitable boundary conditions, ground state properties of phase coherent CDW systems are calculated in the mean-field approximation. It is shown that in a charge-density-wave/normal-metal/charge-density-wave junction the CDW condensates couple through the normal metal region by means of Friedel oscillations. Geometrical resonance effects are predicted. We relate the phase-dependent energy of the junction to a momentum current, carried by electron-hole pairs. The effects of pinning potentials at the interfaces are also considered. Finally, we discuss the analogies with superconductor and ferromagnet junctions.

Original languageEnglish
Pages (from-to)2798-2805
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume54
Issue number4
DOIs
Publication statusPublished - 1996

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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