The Low-dimensional Molecular Magnetic Systems: Simulations and Experiment
A certain class of the low-dimensional molecular magnetic systems is reviewed. Both a numerical quantum transfer-matrix approach and the exact diagonalization technique are presented. The approach is applied to some supramolecular clusters containing Mn and Ni ions and to a number of the macroscopic magnetic spin S=1 chains (with uniform and alternating couplings and the single-ion anisotropy). The compounds in question are characterized by the spin Heisenberg models and their thermodynamic properties are calculated at finite temperatures. The results of our simulation are compared with the available experimental results, showing an overall quantitative agreement. In analysis of the low-energy spectrum of the Ni12 molecule, the single-ion anisotropy is taken into account.
Keywordslow-dimensional systems molecular magnets numerical simulations
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