Field-Induced Magnetic Order in Quantum Spin Liquids

Details Field-Induced Magnetic Order in Quantum Spin Liquids Field-Induced Magnetic Order in Quantum Spin Liquids

2001-05-23

arxiv.org/abs/cond-mat/0105464v1

Phys. Rev. Lett. 87, 206407 (2001)

Physics

Condensed Matter

Strongly Correlated Electrons

RevTex, 4 pages with 5 figures

Scientific paper

10.1103/PhysRevLett.87.206407

We study magnetic field-induced three-dimensional ordering transitions in low-dimensional quantum spin liquids, such as weakly coupled, antiferromagnetic spin-1/2 Heisenberg dimers and ladders. Using stochastic series expansion quantum Monte Carlo simulations, thermodynamic response functions are obtained down to ultra-low temperatures. We extract the critical scaling exponents which dictate the power-law dependence of the transition temperature on the applied magnetic field. These are compared with recent experiments on candidate materials and with predictions for the Bose-Einstein condensation of magnons obtained in mean-field theory.

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