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Molecular Nanomagnets

December 12, 2008
From D. Gatteschi, R. Sessoli, J. Villain book: Molecular Nanomagnets (2006)

The Spin Hamiltonian approach is widely used in various spectroscopies.

The Spin Hamiltonian approach eliminates all the orbital coordinates needed to describe the system and replaces them with spin coordinates, taking advantage of the symmetry properties of the system. An example of these approximations coming from the symmetry is the quencing of orbital angular momentum of the magnetic bricks.

The system with orbitally non-degenerate ground states are usually well treated with the Spin Hamiltonian approach.

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