2001/07/31 by M. E. Zhitomirsky · 1 citation
Physics and Astronomy · #cond-mat.str-el #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevlett.88.057204
published as Phys. Rev. Lett. 88, 057204 (2002) · 4 pages, 2 figures, accepted version
arxiv created 2002/01/18 · arxiv updated 2009/11/30
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.