Field induced transitions in a kagome antiferromagnet

Details Field induced transitions in a kagome antiferromagnet Field induced transitions in a kagome antiferromagnet

2001-07-30

arxiv.org/abs/cond-mat/0107608v3

Phys. Rev. Lett. 88, 057204 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures, accepted version

Scientific paper

10.1103/PhysRevLett.88.057204

The thermal order by disorder effect in magnetic field is studied for a classical Heisenberg antiferromagnet on the kagome lattice. Using analytical arguments we predict a unique H-T phase diagram for this strongly frustrated magnet: states with a coplanar and a uniaxial triatic order parameters respectively at low and high magnetic fields and an incompressible collinear spin-liquid state at a one-third of the saturation field. We also present the Monte Carlo data which confirm existence of these phases.

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