Site-centered impurities in quantum spin chains

Details Site-centered impurities in quantum spin chains Site-centered impurities in quantum spin chains

2001-11-19

arxiv.org/abs/cond-mat/0111337v1

Phys. Rev. B 66, 104401 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 6 figures

Scientific paper

10.1103/PhysRevB.66.104401

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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