Aharonov-Bohm-type oscillations of thermopower in a quantum-dot ring geometry

Ya. M. Blanter, C. Bruder, Rosario Fazio, and Herbert Schoeller
Phys. Rev. B 55, 4069 – Published 15 February 1997
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Abstract

We investigate Aharonov-Bohm-type oscillations of the thermopower of a quantum dot embedded in a ring for the case when the interaction between electrons can be neglected. The thermopower is shown to be strongly flux dependent, and typically the amplitude of oscillations exceeds the background value. It is also shown to be essentially dependent on the phase of the scattering matrix, which is determined by the experimental geometry and is not known in the given experiment. Two procedures to compare theory and experiment are proposed.

  • Received 20 September 1996

DOI:https://doi.org/10.1103/PhysRevB.55.4069

©1997 American Physical Society

Authors & Affiliations

Ya. M. Blanter

  • Institut für Theorie der Kondensierten Materie, Universität Karlsruhe, 76128 Karlsruhe, Germany
  • and Theoretical Physics, Moscow Institute for Steel and Alloys, Leninskii pr. 4, 117936 Moscow, Russia

C. Bruder

  • Institut für Theoretische Festkörperphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany

Rosario Fazio

  • Istituto di Fisica, Universit`a di Catania, viale A. Doria 6, 95128 Catania, Italy

Herbert Schoeller

  • Institut für Theoretische Festkörperphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany

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Vol. 55, Iss. 7 — 15 February 1997

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