Magnetic Exchange in Spin Clusters

Abstract

We investigate the role of exchange bridges in molecular magnets. We explore their effects on the distribution of the valence electrons and their contribution to the exchange processes. The present study is focused on a spin-half dimer with nonequivalent exchange bridges. Here, we derive an effective Hamiltonian that allows for an accurate estimation of the observables associated to the magnetic properties of the magnet. Our results are compared to those obtained by means of the conventional Heisenberg model that usually fails.

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• Maximally localized Wannier functions: Theory and applications
• Effect of Fe excess on structural, magnetic and superconducting properties of single-crystalline Fe(1+x)Te(1-y)Se(y)
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• Inelastic neutron scattering study and Hubbard model description of the antiferromagnetic tetrahedral molecule Ni4Mo12
• Magnetic and neutron spectroscopic properties of the tetrameric nickel compound $[M{o}_{12}{O}_{28}({\mu }_2-OH{)}_9({\mu }_3-OH{)}_3{Ni(H_{2}O{)}_3}_4]$\cdot$13H_{2}O$

Cited by in corpus (3)

• Magnetization steps in the molecular magnet Ni${}_4$Mo${}_{12}$ revealed by complex exchange bridges
• Magnetic excitations in molecular magnets with complex bridges: The tetrahedral molecule Ni${}_4$Mo${}_{12}$
• Molecular magnetism in the multi-configurational self-consistent field method