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28 March 2024
 
  » arxiv » cond-mat/9702007

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Parity-locking effect in a strongly-correlated ring
C. A. Stafford ; D. F. Wang ;
Date 31 Dec 1996
Subject Strongly Correlated Electrons | cond-mat.str-el
AbstractOrbital magnetism in an integrable model of a multichannel ring with long-ranged electron-electron interactions is investigated. In a noninteracting multichannel system, the response to an external magnetic flux is the sum of many diamagnetic and paramagnetic contributions, but we find that for sufficiently strong correlations, the contributions of all channels add constructively, leading to a parity (diamagnetic or paramagnetic) which depends only on the total number of electrons. Numerical results confirm that this parity-locking effect is robust with respect to subband mixing due to disorder.
Source arXiv, cond-mat/9702007
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