Orbital fluctuations and strong correlations in quantum dots

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Abstract

In this paper we focus our attention on quantum dot systems where exotic strongly correlated behaviour develops due to the presence of orbital or charge degrees of freedom. After giving a concise overview of the theory of transport and the Kondo effect through a single-electron transistor, we discuss how the S U (4) Kondo effect develops in dots having orbitally degenerate stales and in double dot systems, and then study the singlet-triplet transition in lateral quantum dots. Charge fluctuations and Matveev's mapping to the two-channel Kondo model in the vicinity of a charge degeneracy point are also discussed.

Original languageEnglish
Pages (from-to)2043-2072
Number of pages30
JournalPhilosophical Magazine
Volume86
Issue number13-14
DOIs
Publication statusPublished - May 1 2006

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Kondo effect
quantum dots
orbitals
single electron transistors
degrees of freedom
Fluctuations
Orbital
Triplet
Singlet
Degeneracy

ASJC Scopus subject areas

  • Philosophy

Cite this

Orbital fluctuations and strong correlations in quantum dots. / Zaránd, G.

In: Philosophical Magazine, Vol. 86, No. 13-14, 01.05.2006, p. 2043-2072.

Research output: Contribution to journalArticle

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