{ "id": "cond-mat/9710191", "version": "v1", "published": "1997-10-18T13:48:03.000Z", "updated": "1997-10-18T13:48:03.000Z", "title": "Influence of the lattice geometry on the thermodynamical properties of two-dimensional spin systems", "authors": [ "B. Mombelli", "O. Kahn", "J. Leandri", "Y. Leroyer", "S. Mechkov", "Y. Meurdesoif" ], "comment": "8 pages with 5 Postscript figures, RevTeX, submitted to Phys. Rev. B", "doi": "10.1088/0953-8984/10/23/019", "categories": [ "cond-mat.stat-mech" ], "abstract": "Various types of mixed spin two-dimensional Heisenberg networks are investigated by means of Monte Carlo simulations. This study aims at interpreting quantitatively the thermodynamical properties of two-dimensional molecule-based magnets recently synthesized. The proposed model requires that: (i) one of the two magnetic centers has a spin large enough to be treated as a classical spin; (ii) the zero field Hamiltonian is isotropic; (iii) the quantum spins have only classical spins as neighbours. The quantum Hamiltonian is then replaced by a classical one with effective ferromagnetic interactions. The temperature dependence of both the specific heat and magnetic susceptibility are calculated. The effect of the lattice geometry is analysed.", "revisions": [ { "version": "v1", "updated": "1997-10-18T13:48:03.000Z" } ], "analyses": { "keywords": [ "two-dimensional spin systems", "lattice geometry", "thermodynamical properties", "mixed spin two-dimensional heisenberg networks", "monte carlo simulations" ], "tags": [ "journal article" ], "note": { "typesetting": "RevTeX", "pages": 8, "language": "en", "license": "arXiv", "status": "editable" } } }