Magnetic Gruneisen parameter and magnetocaloric properties of a coupled spin-electron double-tetrahedral chain

Abstract

Magnetocaloric effect in a double-tetrahedral chain, in which nodal lattice sites occupied by the localized Ising spins regularly alternate with three equivalent lattice sites available for mobile electrons, is exactly investigated by considering the one-third electron filling and the ferromagnetic Ising exchange interaction between the mobile electrons and their nearest Ising neighbours. The entropy and the magnetic Gruneisen parameter, which closely relate to the magnetocaloric effect, are exactly calculated in order to investigate the relation between the ground-state degeneracy and the cooling efficiency of the hybrid spin-electron system during the adiabatic demagnetization.

5 pages, 5 figures

References in corpus (5)

• Universal low-temperature behavior of frustrated quantum antiferromagnets in the vicinity of the saturation field
• Vigorous thermal excitations in a double-tetrahedral chain of localized Ising spins and mobile electrons mimic a temperature-driven first-order phase transition
• Magnetocaloric effect in spin-1/2 $XX$ chains with three-spin interactions
• Cooling through quantum criticality and many-body effects in condensed matter and cold gases
• Ground state, magnetization process and magnetocaloric effect of the exactly tractable spin-electron tetrahedral chain

Cited by in corpus (14)

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• Ground-state and magnetocaloric properties of a coupled spin-electron double-tetrahedral chain (exact study at the half filling)
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• Classification of materials with divergent magnetic Grüneisen parameter
• Hubbard pair cluster in the external fields. Studies of the polarization and susceptibility
• Hubbard pair cluster in the external fields. Studies of the magnetic properties
• Residual entropy of the dilute Ising chain in a magnetic field
• Reentrant phenomenon and inverse magnetocaloric effect in a generalized spin-(1/2,s) Fisher's super-exchange antiferromagnet
• Hubbard pair cluster with elastic interactions. Studies of thermal expansion, magnetostriction and electrostriction
• Magnetization plateau as a result of the uniform and gradual electron doping in a coupled spin-electron double-tetrahedral chain
• Quantum versus classical nature of a low-temperature magnetic phase transition in TbAl${}_3$(BO${}_3$)${}_4$
• On the ground-state degeneracy and entropy in a double-tetrahedral chain formed by the localized Ising spins and mobile electrons
• Inverse magnetocaloric effect in the spin-1/2 Fisher's super-exchange antiferromagnet
• Insights into Magnetic Properties of a Mixed Spin-Electron Model on Decorated Planar Lattices Composed of Half-filled Trigonal Bipyramids