Soliton dynamics in 1D quantum antiferromagnets

The problem of dissipative motion of solitons in the case of tetramethyl ammonium manganese chloride (TMMC) is studied as a function of the external magnetic field and the temperature. Two specific situations are analyzed separately; the first, above the transition temperature \(T_N\), in which the...

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Bibliographic Details
Published in:arXiv.org 2000-05
Main Authors: A Villares Ferrer, Caldeira, A O, Pires, A S T
Format: Article
Language:English
Subjects:
Antiferromagnetism
Equations of motion
Manganese
Solitary waves
Structure factor
Transition temperature
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Summary:The problem of dissipative motion of solitons in the case of tetramethyl ammonium manganese chloride (TMMC) is studied as a function of the external magnetic field and the temperature. Two specific situations are analyzed separately; the first, above the transition temperature \(T_N\), in which the classical motion of the spin degree of freedom is described by a sine-Gordon (SG) equation of motion and, the second, below \(T_N\), in which the system is described by a double sine-Gordon (2SG) equation of motion. The existence of a dissipative regime for the soliton motion and its influence on the dynamical structure factor -which might be experimentally detected- are reported.
ISSN:2331-8422