Transport Through Artificial Kondo Impurities

S. De Franceschi, S. Sasaki, J. M. Elzerman, W. G. van der Wiel, S. Tarucha and L. P. Kouwenhoven
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S. De Franceschi: Delft University of Technology, Department of Applied Physics, DIMES, and ERATO Mesoscopic Correlation Project
S. Sasaki: NTT Basic Research Laboratories
J. M. Elzerman: Delft University of Technology, Department of Applied Physics, DIMES, and ERATO Mesoscopic Correlation Project
W. G. van der Wiel: Delft University of Technology, Department of Applied Physics, DIMES, and ERATO Mesoscopic Correlation Project
S. Tarucha: NTT Basic Research Laboratories
L. P. Kouwenhoven: Delft University of Technology, Department of Applied Physics, DIMES, and ERATO Mesoscopic Correlation Project

A chapter in Macroscopic Quantum Coherence and Quantum Computing, 2001, pp 317-324 from Springer

Abstract: Abstract We report an experiment performed on a few-electron quantum dot in which the quantum numbers of the occupied electron states can be precisely identified. Besides the usual Kondo behavior for spin=l/2 and odd electron number, an unexpected Kondo effect is observed for an even electron number. This effect, which is actually very strong, occurs at a spin-singlet/spin-triplet transition, tuned by a magnetic field. An essentially new Kondo phenomenon is proposed to explain our finding.

Keywords: Quantum dot; Kondo effect (search for similar items in EconPapers)
Date: 2001
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DOI: 10.1007/978-1-4615-1245-5_32

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