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The Interplay of Spin and Charge Channels in Zero Dimensional Systems

Authors
  • Kiselev, M. N.
  • Gefen, Yuval
Type
Published Article
Publication Date
Apr 28, 2005
Submission Date
Apr 28, 2005
Identifiers
DOI: 10.1103/PhysRevLett.96.066805
arXiv ID: cond-mat/0504751
Source
arXiv
License
Unknown
External links

Abstract

We present a full fledged quantum mechanical treatment of the interplay between the charge and the spin zero-mode interactions in quantum dots. Quantum fluctuations of the spin-mode suppress the Coulomb blockade and give rise to non-monotonic behavior near this point. They also greatly enhance the dynamic spin susceptibility. Transverse fluctuations become important as one approaches the Stoner instability. The non-perturbative effects of zero-mode interaction are described in terms of charge (U(1)) and spin (SU(2)) gauge bosons.

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