Boundary-mediated electron-electron interactions in quantum point contacts

V. T. Renard, O. A. Tkachenko, V. A. Tkachenko, T. Ota, N. Kumada, J. C. Portal, Y. Hirayama

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


An unusual increase of the conductance with temperature is observed in clean quantum point contacts for conductances larger than 2(e2/h). At the same time, a positive magnetoresistance arises at high temperatures. A model accounting for electron-electron interactions mediated by boundaries (scattering on Friedel oscillations) qualitatively describes the observation. It is supported by a numerical simulation at zero magnetic field.

Original languageEnglish
Article number186801
JournalPhysical review letters
Issue number18
Publication statusPublished - 2008 May 5

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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