Magnetocaloric effect in two-dimensional spin-1/2 antiferromagnets

Abstract

The magnetocaloric effect is studied at the transition to saturation in the antiferromagnetic spin-1/2 Heisenberg model on the simplest two-dimensional lattices, namely the square and the triangular lattice. Numerical results are presented for the entropy which are consistent with identical universal properties. However, the absolute values of the entropy are bigger on the geometrically frustrated triangular lattice than on the non-frustrated square lattice, indicating that frustration improves the magnetocaloric properties.

2 pages, 2 figures included, to appear in Physica B (proceedings of SCES'05)

References in corpus (7)

• Universally diverging Grueneisen parameter and the magnetocaloric effect close to quantum critical points
• Enhanced magnetocaloric effect in frustrated magnets
• Magnetocaloric effect in one-dimensional antiferromagnets
• Quantum magnetism in two dimensions: From semi-classical Néel order to magnetic disorder
• Wang-Landau sampling for quantum systems: algorithms to overcome tunneling problems and calculate the free energy
• Magnetocaloric effect in pyrochlore antiferromagnet Gd2Ti2O7
• A Comparative Study of the Magnetization Process of Two-Dimensional Antiferromagnets

Cited by in corpus (26)

• Frustrated two dimensional quantum magnets
• Field dependence of the quantum ground state in the Shastry-Sutherland system SrCu${}_2$(BO${}_3$)${}_2$
• Exact calculation of the magnetocaloric effect in the spin-1/2 XXZ chain
• Exact solution of the geometrically frustrated spin-1/2 Ising-Heisenberg model on the triangulated Kagome (triangles-in-triangles) lattice
• Magnetization process, bipartite entanglement and enhanced magnetocaloric effect of the exactly solved spin-1/2 Ising-Heisenberg tetrahedral chain
• The influence of interplanar coupling on the entropy and specific heat of the bilayer ferromagnet
• 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
• Thermodynamic and magnetocaloric properties of geometrically frustrated Ising nanoclusters
• Magnetocaloric effect in the spin-1/2 Ising-Heisenberg diamond chain with the four-spin interaction
• 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
• Magneto-thermal properties of the spin-s Heisenberg antiferromagnet on the cuboctahedron
• Thermodynamic Properties of the One-Dimensional Extended Quantum Compass Model in the Presence of a Transverse Field
• Unconventional quantum ordered and disordered states in the highly frustrated spin-1/2 Ising-Heisenberg model on triangles-in-triangles lattices
• Proximity-induced spin-polarized magnetocaloric effect in transition metal dichalcogenides
• Magnetic Catalysis in Antiferromagnetic Films
• Thermodynamics of the spin-1/2 two-leg ladder compound $(C_5{H}_{12}N{)}_{2}CuB{r}_4$
• Mixed-spin system with supersolid phases: Magnetocaloric effect and thermal properties
• Thermodynamic properties of the macroscopically degenerate tetramer-dimer phase of the spin-1/2 Heisenberg model on the diamond-decorated square lattice
• Macroscopic ground state degeneracy of the ferro-antiferromagnetic Heisenberg model on diamond-decorated lattices
• Magnetocaloric properties of a frustrated Blume-Capel antiferromagnet
• Magnetocaloric Effect in Two-Dimensional Diluted Ising Model: Appearance of Frustrations in the Ground State
• Phase diagram and macroscopic ground state degeneracy of frustrated spin-1/2 anisotropic Heisenberg model on diamond-decorated lattices
• Field-induced states and thermodynamics of the frustrated Heisenberg antiferromagnet on a square lattice
• Theoretical investigations of tetrameric magnetic molecules for sub-kelvin cooling