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cond-mat.str-el2008★ 5 cited
Orbital degeneracy, Hund's coupling, and band ferromagnetism: effective quantum parameter, suppression of quantum corrections, and enhanced stability
Bhaskar Kamble, Avinash Singh
An effective quantum parameter is obtained for the band ferromagnet in terms of orbital degeneracy and Hund's coupling. This quantum parameter determines, in analogy with 1/N for t…
cond-mat.str-el2008★ 12 cited
Spin-charge coupling in a band ferromagnet: magnon-energy reduction, anomalous softening, and damping
Sudhakar Pandey, Avinash Singh
The effects of correlation-induced coupling between spin and charge fluctuations on spin-wave excitations in a band ferromagnet are investigated by including self-energy and vertex…