Current Noise in an Irradiated Point Contact

Y. Levinson and P. Wölfle
Phys. Rev. Lett. 83, 1399 – Published 16 August 1999
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Abstract

We propose a new approach to calculate current and current correlations in a ballistic quantum point contact interacting with a classical field. The approach is based on the concept of scattering states for a time-dependent Hamiltonian neglecting electron-electron interaction. Using this approach we calculate the spectra of the current noise in a biased point contact irradiated by a weak random field. For typical radiation frequencies ν less than the temperature T and the bias voltage V, we find a narrow peak of width ν on top of a broad background of width max(T,eV).

  • Received 10 March 1999

DOI:https://doi.org/10.1103/PhysRevLett.83.1399

©1999 American Physical Society

Authors & Affiliations

Y. Levinson

  • Department of Condensed Matter Physics, The Weizmann Institute of Science, 76100 Rehovot, Israel

P. Wölfle

  • Institut für Theorie der Kondensierten Materie, Universität Karlsruhe, 76128 Karlsruhe, Germany

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Vol. 83, Iss. 7 — 16 August 1999

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