Heisenberg Antiferromagnetic Chains: Quantum-Classical Crossover

Authors

Jill C. Bonner, University of Rhode Island
Gerhard Müller, University of Rhode IslandFollow
M. P. Nightingale, University of Rhode IslandFollow
H. W.J. Blöte
J. B. Parkinson

Document Type

Article

Date of Original Version

2-1986

Abstract

An unusual crossover mechanism has been discovered by numerical investigation of the dispersion spectrum of Heisenberg antiferromagnetic chains with various spin values in a magnetic field. This result is reflected in novel behavior of static properties such as the integrated intensity. A study of various excitation gaps using finite chain calculations extended by quantum Monte Carlo studies indicates unusual behaviour in the T=0 magnetization isotherms.

Citation/Publisher Attribution

Jill C. Bonner, Gerhard Müller, M.P. Nightingale, H.W.J. Blöte and J.B. Parkinson. Heisenberg antiferromagnetic chains: quantum-classical crossover. J. Magnetism and Magn. Materials 54-57 (1986), 1253-1254.

Available at: http://www.sciencedirect.com/science/article/pii/030488538690805X