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Site-centered impurities in quantum spin chains

P. Pujol·J. Rech
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Abstract

The magnetic behavior of antiferromagnetic spin 1/2 chains with site-centered impurities in a magnetic field is investigated. The effect of impurities is implemented by considering different situations of both diagonal and off-diagonal disorder. The resulting magnetization curves present a wide variety of plateaux, whose position strongly depends on the kind of disorder considered. The relevance of these results to experimental situations is also discussed.

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P. Pujol, J. Rech. 2001-11-19. Site-centered impurities in quantum spin chains. https://doi.org/10.1103/physrevb.66.104401

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