Magnetocaloric effect in quantum spin-s chains

We compute the entropy of antiferromagnetic quantum spin-s chains in an external magnetic field using exact diagonalization and Quantum Monte Carlo simulations. The magnetocaloric effect, i. e., temperature variations during adiabatic field changes, can be derived from the isentropes. First, we focu...

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Bibliographic Details
Main Authors: A. Honecker, S. Wessel
Format: Article
Language:English
Published: Institute for Condensed Matter Physics 2009-01-01
Series:Condensed Matter Physics
Subjects:
Online Access:http://dx.doi.org/10.5488/CMP.12.3.399