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On the Relaxational Properties of a Quantum Dipolar Spin Glasses Model
Dipartimento di Scienze Fisiche “E.R. Caianiello”, Università di Salerno, Salerno, Italy
- 1 Dipartimento di Scienze Fisiche “E.R. Caianiello”, Università di Salerno, Salerno, Italy
World Journal of Condensed Matter Physics·Volume 02 (2012)·Pages 124–128·Published 31 August 2012·DOI10.4236/wjcmp.2012.23020
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Abstract
The dissipative part of the linear magnetic dynamic susceptibility of dipolar spin glasses is considered. Due to the transition of the system (at enough high concentration of the magnetic dipoles) from a paramagnetic phase to magnetic dipolar one, an anomalous temperature dependence of the dissipative part of the magnetic susceptibility is found. Our results are in qualitative agreement with experiments performed on the dipolar-coupled Ising magnet LiHo x Y 1-x F 4 .
KeywordsSpin GlassesDipolar SystemsRelaxational Properties
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