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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Wednesday, 10 May 2006
(at 12:30 in room Phy 8.1.09)
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Journal-Club
Shot-noise signatures of 0.7 structure and spin in a quantum point contact

Thomas Geiger

Institut für Experimentelle und Angewandte Physik
Universität Regensburg
   






(From cond-mat/0604019): We report simultaneous measurement of shot noise and dc transport in a quantum point contact as a function of source-drain bias, gate voltage, and in-plane magnetic field. Shot noise at zero field exhibits an asymmetry related to the 0.7 structure in conductance. The asymmetry in noise evolves smoothly into the symmetric signature of spin-resolved electron transmission at high field. Comparison to a phenomenological model with density-dependent level splitting yields good quantitative agreement.



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Invited by G. Cuniberti, C. Strunk (JClub)

Within the Journal Club 52 478

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