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cond-mat.str-el2001
Zone Edge Softening and Relaxation in the Double Exchange Model
S. E. Barnes, S. Maekawa
The double exchange model is formulated in terms of three auxiliary particles. A slow true bosonic magnon propagates by admixture with a fast fermionic pseudo-magnon.…
cond-mat.mes-hall2001
Hidden Symmetries in Nano-magnets
M. Preda, S. E. Barnes
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 ope…