Electron-phonon scattering in quantum point contacts

Details Electron-phonon scattering in quantum point contacts Electron-phonon scattering in quantum point contacts

2002-11-26

arxiv.org/abs/cond-mat/0211579v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, no figures

Scientific paper

10.1103/PhysRevLett.90.176804

We study the negative correction to the quantized value $2e^2/h$ of the conductance of a quantum point contact due to the backscattering of electrons by acoustic phonons. The correction shows activated temperature dependence and also gives rise to a zero-bias anomaly in conductance. Our results are in qualitative agreement with recent experiments studying the 0.7 feature in the conductance of quantum point contacts.

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