Shot Noise by Quantum Scattering in Chaotic Cavities

S. Oberholzer, E. V. Sukhorukov, C. Strunk, C. Schönenberger, T. Heinzel, and M. Holland
Phys. Rev. Lett. 86, 2114 – Published 5 March 2001
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Abstract

We have experimentally studied shot noise of chaotic cavities defined by two quantum point contacts in series. The cavity noise is determined as (1/4)2e|I| in agreement with theory and can be well distinguished from other contributions to noise generated at the contacts. Subsequently, we have found that cavity noise decreases if one of the contacts is further opened and reaches nearly zero for a highly asymmetric cavity. Heating inside the cavity due to electron-electron interaction can slightly enhance the noise of large cavities and is also discussed quantitatively.

  • Received 6 September 2000

DOI:https://doi.org/10.1103/PhysRevLett.86.2114

©2001 American Physical Society

Authors & Affiliations

S. Oberholzer, E. V. Sukhorukov, C. Strunk*, and C. Schönenberger

  • Institut für Physik, Universität Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland

T. Heinzel

  • Solid State Physics Laboratory, ETH-Zürich, CH-8093 Zürich, Switzerland

M. Holland

  • Department of Electronics, University of Glasgow, Glasgow G12 8QQ, United Kingdom

  • *Present address: Institute for Experimental and Applied Physics, University of Regensburg, D-93040 Regensburg, Germany.

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Vol. 86, Iss. 10 — 5 March 2001

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