Field-Induced Transitions in a Kagomé Antiferromagnet
Abstract
The thermal order by disorder effect in magnetic field is studied for a classical Heisenberg antiferromagnet on the Kagomé 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 parameter, respectively, at low and high magnetic fields and an incompressible collinear spin-liquid state at one-third of the saturation field. We also present the Monte Carlo data which confirm the existence of these phases.
- Publication:
-
Physical Review Letters
- Pub Date:
- February 2002
- DOI:
- 10.1103/PhysRevLett.88.057204
- arXiv:
- arXiv:cond-mat/0107608
- Bibcode:
- 2002PhRvL..88e7204Z
- Keywords:
-
- Strongly Correlated Electrons;
- Statistical Mechanics
- E-Print:
- 4 pages, 2 figures, accepted version