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03 October 2022
 
  » arxiv » cond-mat/0504118

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Exchange Coupling in a One-Dimensional Wigner Crystal
A. D. Klironomos ; R. R. Ramazashvili ; K. A. Matveev ;
Date 5 Apr 2005
Subject Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall
AbstractWe consider a long quantum wire at low electron densities. In this strong interaction regime a Wigner crystal may form, in which electrons comprise an antiferromagnetic Heisenberg spin chain. The coupling constant J is exponentially small, as it originates from tunneling of two neighboring electrons through the segregating potential barrier. We study this exponential dependence, properly accounting for the many-body effects and the finite width of the wire.
Source arXiv, cond-mat/0504118
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