From classical to quantum Kagome antiferromagnet in a magnetic field

Details From classical to quantum Kagome antiferromagnet in a magnetic field From classical to quantum Kagome antiferromagnet in a magnetic field

2001-08-21

arxiv.org/abs/cond-mat/0108337v2

Phys. Rev. B 65, 094418 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

REVTeX, 7 pages, 7 figures. v2 contains several additions. New discussion on classical plateau added

Scientific paper

10.1103/PhysRevB.65.094418

We study the magnetic properties of the Kagome antiferromagnet going from the classical limit to the deep quantum regime of spin 1/2 systems. In all the cases there are special values for the magnetization, 1/3 in particular, in which a singular behavior is observed to occur in both the classical and quantum cases. We show clear evidence for a magnetization plateau for the spin 1/2 case in a wide range of XXZ anisotropies and for the occurrence of quantum order by disorder effects.

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