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|Type:||Artigo de periódico|
|Title:||Domain Wall Dynamics In Id Quantum Antiferromagnets|
|Author:||Villares Ferrer A.|
|Abstract:||The problem, of dissipative motion of domain walls (DW) 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 TN, in which the classical motion of the spin degree of freedom may be described by a sine-Gordon equation of motion and, the second, below TN, in which the system may be described by a double sine-Gordon equation of motion. The existence of a dissipative regime for the DW motion and its influence on the dynamical structure factor - which might be experimentally detected - are investigated. © 2001 Elsevier Science B.V. All rights reserved.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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