Phys. Rev. B 66, 125315 (2002) - Interference in interacting quantum dots with spin

Interference in interacting quantum dots with spin

Daniel Boese, Walter Hofstetter, and Herbert Schoeller

Phys. Rev. B 66, 125315 – Published 27 September 2002

Abstract

We study spectral and transport properties of interacting quantum dots with spin. Two particular model systems are investigated: lateral multilevel and two parallel quantum dots. In both cases different paths through the system can give rise to interference. We demonstrate that this strengthens the multilevel Kondo effect for which a simple two-stage mechanism is proposed. In parallel dots we show under which conditions the peak of an interference-induced orbital Kondo effect can be split.

Received 25 January 2002

DOI:https://doi.org/10.1103/PhysRevB.66.125315

©2002 American Physical Society

Authors & Affiliations

Institut für Theoretische Festkörperphysik, Universität Karlsruhe, D-76128 Karlsruhe, Germany

Walter Hofstetter^†

Theoretische Physik III, Elektronische Korrelationen und Magnetismus, Universität Augsburg, D-86135 Augsburg, Germany

Herbert Schoeller

Institut für Theoretische Physik A, RWTH Aachen, D-52056 Aachen, Germany

^*Electronic address: dboese@tfp.physik.uni-karlsruhe.de
^†Present address: Lyman Laboratory, Harvard University, Cambridge, MA 02138.

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Vol. 66, Iss. 12 — 15 September 2002

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