Magnetocaloric effect in integrable spin-s chains

Abstract

We study the magnetocaloric effect for the integrable antiferromagnetic high-spin chain. We present an exact computation of the Grüneisen parameter, which is closely related to the magnetocaloric effect, for the quantum spin-s chain on the thermodynamical limit by means of Bethe ansatz techniques and the quantum transfer matrix approach. We have also calculated the entropy S and the isentropes in the (H,T) plane. We have been able to identify the quantum critical points H_c^{(s)}=2/(s+1/2) looking at the isentropes and/or the characteristic behaviour of the Grüneisen parameter.

6 pages, 3 figures

References in corpus (6)

• Magnetocaloric effect in one-dimensional antiferromagnets
• Magnetocaloric effect in pyrochlore antiferromagnet Gd2Ti2O7
• Exact calculation of the magnetocaloric effect in the spin-1/2 XXZ chain
• Magnetocaloric effect in quantum spin-s chains
• Observation of field-dependent magnetic parameters in the magnetic molecule {Ni4Mo12}
• Thermodynamics of antiferromagnetic alternating spin chains

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• Magnetocaloric effect in spin-1/2 $XX$ chains with three-spin interactions
• Thermodynamic properties of a diluted Heisenberg ferromagnet with interaction anisotropy -- magnetocaloric point of view
• Ferrimagnetism in the Heisenberg-Ising Bilayer with Magnetically Non-equivalent Planes
• Magnetocaloric effect in the spin-$1/2$ chain with competing interactions
• Thermodynamics of quantum spin chains with competing interactions
• Effects of site dilution on Compensation in Ising Spin-1/2 trilayered triangular Ferrimagnets with non-equivalent planes