Universal Finite Temperature Properties of a Three Dimensional Quantum Antiferromagnet in the Vicinity of a Quantum Critical Point
arXiv:1110.6478 · doi:10.1103/PhysRevB.85.144431
Abstract
We consider a 3-dimensional quantum antiferromagnet which can be driven through a quantum critical point (QCP) by varying a tuning parameter g. Starting from the magnetically ordered phase, the N{é}el temperature will decrease to zero as the QCP is approached. From a generic quantum field theory, together with numerical results from a specific microscopic Heisenberg spin model, we demonstrate the existence of universal behaviour near the QCP. We compare our results with available data for TlCuCl_3
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- Spectral functions of the Higgs mode near two-dimensional quantum critical points
- Multiplicative logarithmic corrections to quantum criticality in three-dimensional dimerized antiferromagnets
- Asymptotic Freedom in Quantum Antiferromagnet TlCuCl3
- Excitation Gap Scaling near Quantum Critical Three-Dimensional Antiferromagnets
- Spectral function of the Higgs mode in 4-\varepsilon dimensions
- Investigation of a universal behavior between Néel temperature and staggered magnetization density for a three-dimensional quantum antiferromagnet
- Universal scalings of Néel temperature, staggered magnetization density, and spinwave velocity of three-dimensional disordered and clean quantum antiferromagnets
- Classification for the universal scaling of Néel temperature and staggered magnetization density of three-dimensional dimerized spin-1/2 antiferromagnets
- Universal scaling of three-dimensional dimerized quantum antiferromagnets on bipartite lattices
- Monte Carlo determination of the low-energy constants for a two-dimensional spin-1 Heisenberg model with spatial anisotropy