Condensed Matter Physics, 2014, vol. 17, No. 1, 13001:1-10
Magnetocaloric effect in the spin-1/2 Ising-Heisenberg diamond chain
with the four-spin interaction
(Department of Applied Mathematics and Informatics, Faculty of Mechanical Engineering,
Technical University in Koice, Letná 9, 042 00 Koice, Slovak Republic)
The magnetocaloric effect in the symmetric spin-1/2 Ising–Heisenberg diamond
chain with the Ising four-spin interaction is investigated using the generalized
decoration-iteration mapping transformation and the transfer-matrix technique.
The entropy and the Grüneisen parameter, which closely relate to the magnetocaloric effect,
are exactly calculated to compare an ability of the system to cool in the vicinity of
different field-induced ground-state phase transitions during the adiabatic demagnetization.
Ising–Heisenberg diamond chain, four-spin interaction, phase diagram, magnetocaloric effect
05.50.+q, 75.10.Pq, 75.30.Sg, 75.30.Kz