Temperature-dependent suppression of conductance in quantum wires: Anomalous activation energy from pinning of the band edge

Kenji Hirose, Ned S. Wingreen

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

For unpolarized electrons in a clean quantum wire, density functional theory reveals a thermally activated suppression of conductance. The activation temperature TA grows slowly (roughly quadratically) with gate voltage due to pinning of the band edge at the chemical potential. Similar results were obtained experimentally by Kristensen et al. [Phys. Rev. B 62, 10950 (2000)] for the temperature dependence of the anomalous conductance plateau near 0.7(2e2/h) in a quantum point contact.

Original languageEnglish (US)
Article number073305
Pages (from-to)733051-733054
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number7
DOIs
StatePublished - Aug 15 2001

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Temperature-dependent suppression of conductance in quantum wires: Anomalous activation energy from pinning of the band edge'. Together they form a unique fingerprint.

Cite this