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Two-Stage Kondo Effect in a Quantum Dot at a High Magnetic Field

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Title: Two-Stage Kondo Effect in a Quantum Dot at a High Magnetic Field
Authors: van der Wiel, W. G. Browse this author
De Franceschi, S. Browse this author
Elzerman, J. M. Browse this author
Tarucha, S. Browse this author
Kouwenhoven, L. P. Browse this author
Motohisa, J.6 Browse this author →KAKEN DB
Nakajima, F. Browse this author
Fukui, T. Browse this author →KAKEN DB
Authors(alt): 本久, 順一6
Issue Date: 25-Mar-2002
Publisher: American Physical Society
Journal Title: Physical Review Letters
Volume: 88
Issue: 12
Start Page: 126803
Publisher DOI: 10.1103/PhysRevLett.88.126803
Abstract: We report a strong Kondo effect (Kondo temperature ∼4 K) at high magnetic field in a selective area growth semiconductor quantum dot. The Kondo effect is ascribed to a singlet-triplet transition in the ground state of the dot. At the transition, the low-temperature conductance approaches the unitary limit. Away from the transition, for low bias voltages and temperatures, the conductance is sharply reduced. The observed behavior is compared to predictions for a two-stage Kondo effect in quantum dots coupled to single-channel leads.
Rights: Copyright © 2002 American Physical Society
Type: article
Appears in Collections:量子集積エレクトロニクス研究センター (Research Center for Integrated Quantum Electronics) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 本久 順一

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