Hidden Symmetries in Nano-magnets

M. Preda; S. E. Barnes

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arXiv · cond-mat/0112398

Hidden Symmetries in Nano-magnets

M. Preda·S. E. Barnes

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Abstract

The hidden symmetry of certain nano-magnets leads to many of the levels being doubly degenerate for periodic values of the Zeeman energy. Corresponding to such a symmetry is an operator, $K_{n}$, related to the time reversal operator, and which commutes with the Hamiltonian. The degeneracies for whole integer spin values are often similar to the Kramer's degeneracy for half-integer spin. An all algebraic method for constructing Hamiltonians with such hidden symmetries and different crystal symmetries is described.

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M. Preda, S. E. Barnes. 2001-12-20. Hidden Symmetries in Nano-magnets. https://arxiv.org/abs/cond-mat/0112398

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