Considerations on the quantum double-exchange Hamiltonian

Details Considerations on the quantum double-exchange Hamiltonian Considerations on the quantum double-exchange Hamiltonian

2001-01-16

arxiv.org/abs/cond-mat/0101234v1

Phys. Rev. B 64, 054406 (2001)

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 3 figures

Scientific paper

10.1103/PhysRevB.64.054406

Schwinger bosons allow for an advantageous representation of quantum double-exchange. We review this subject, comment on previous results, and address the transition to the semiclassical limit. We derive an effective fermionic Hamiltonian for the spin-dependent hopping of holes interacting with a background of local spins, which is used in a related publication within a two-phase description of colossal magnetoresistant manganites.

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