Magnetic phase diagram, critical behaviour and 2D-3D crossover in a triangular lattice antiferromagnet RbFe(MoO4)2

L. E. Svistov; A. I. Smirnov; L. A. Prozorova; O. A. Petrenko; A. Micheler; N. Buttgen; A. Ya. Shapiro; L. N. Demianets

doi:10.1103/PhysRevB.74.024412

Magnetic phase diagram, critical behaviour and 2D-3D crossover in a triangular lattice antiferromagnet RbFe(MoO4)2

Strongly Correlated Electrons 2009-11-11 v2

Authors: L. E. Svistov , A. I. Smirnov , L. A. Prozorova , O. A. Petrenko , A. Micheler , N. Buttgen , A. Ya. Shapiro , L. N. Demianets

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We have studied the magnetic and thermodynamic properties as well as the NMR spectra of the Heisenberg antiferromagnet RbFe(MoO4)2. The observed temperature dependence of the order parameter, the critical indices and the overall magnetic H-T phase diagram are all in a good agreement with the theoretical predictions for a 2D XY model. The temperature dependence of the specific heat at low temperature demonstrates a crossover from a T^2 law characteristic of a two-dimensional antiferromagnet to a three-dimensional T^3 law.

Keywords

triangular lattice antiferromagnet RbFe(MoO4)2 magnetic phase diagram critical exponents 2D-3D crossover XY model

Cite

@article{arxiv.cond-mat/0603617,
  title  = {Magnetic phase diagram, critical behaviour and 2D-3D crossover in a triangular lattice antiferromagnet RbFe(MoO4)2},
  author = {L. E. Svistov and A. I. Smirnov and L. A. Prozorova and O. A. Petrenko and A. Micheler and N. Buttgen and A. Ya. Shapiro and L. N. Demianets},
  journal= {arXiv preprint arXiv:cond-mat/0603617},
  year   = {2009}
}

Comments

11 pages 16 figures

Magnetic phase diagram, critical behaviour and 2D-3D crossover in a triangular lattice antiferromagnet RbFe(MoO4)2

Abstract

Keywords

Cite

Comments

Related papers