Universal scaling at field-induced magnetic phase transitions

Omid Nohadani*, Stefan Wessel, B. Normand, Stephan Haas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

68 Scopus citations

Abstract

We study field-induced magnetic order in cubic lattices of dimers with antiferromagnetic Heisenberg interactions. The thermal critical exponents at the quantum phase transition from a spin liquid to a magnetically ordered phase are determined from stochastic series expansion quantum Monte Carlo simulations. These exponents are independent of the interdimer coupling ratios, and converge to the value obtained by considering the transition as a Bose-Einstein condensation of magnons, αBEC = 3/2. The scaling results are of direct relevance to the spin-dimer systems TlCuCl3 and KCuCl 3, and explain the broad range of exponents reported for field-induced ordering transitions.

Original languageEnglish (US)
Article number220402
Pages (from-to)220402-1-220402-4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume69
Issue number22
DOIs
StatePublished - Jun 2004

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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