RT Journal Article
SR Electronic
A1 Gálisová, Lucia
T1 Magnetocaloric Effect in the Symmetric Spin-1/2 Diamond Chain with Different Landé g - factors of the Ising and Heisenberg Spins
JF Acta Mechanica Slovaca
YR 2015
VO 19
IS 3
SP 46
OP 53
DO 10.21496/ams.2015.023
UL https://www.actamechanica.sk/artkey/ams-201503-0007.php
AB The symmetric spin-1/2 Ising-Heisenberg diamond chain with different Landé g-factors of the Ising and Heisenberg spins is exactly solved by combining the generalized decoration-iteration transformation and transfer-matrix method. The ground state of the system and the magnetocaloric effect during the adiabatic (de)magnetization are particularly examined. It is evidenced that the considered mixed-spin diamond chain exhibits the enhanced magnetocaloric effect during the adiabatic (de)magnetization in the vicinity of field-induced phase transitions as well as in the zero-field limit when the frustrated phase constitutes the zero-field ground state. The cooling efficiency of the system depends on whether it is macroscopically degenerate in these parameter regions or not.