# Spin-charge coupling in a band ferromagnet: Magnon-energy reduction, anomalous softening, and damping

@article{Pandey2008SpinchargeCI, title={Spin-charge coupling in a band ferromagnet: Magnon-energy reduction, anomalous softening, and damping}, author={Sudhakar Pandey and Avinash Singh}, journal={Physical Review B}, year={2008}, volume={78}, pages={014414} }

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 corrections within a systematic inverse-degeneracy expansion scheme which explicitly preserves the Goldstone mode. Arising from the scattering of a magnon into intermediate spin-excitation states (including both magnon and Stoner excitations) accompanied with charge fluctuations in the majority-spin band, this spin…

## 8 Citations

Spin-charge and spin-orbital coupling effects on spin dynamics in ferromagnetic manganites.

- Physics, ChemistryJournal of physics. Condensed matter : an Institute of Physics journal
- 2010

Correlation-induced spin-charge and spin-orbital coupling effects on spin dynamics in ferromagnetic manganites are calculated with realistic parameters in order to provide a quantitative comparison…

Orbital degeneracy, Hund's coupling, and band ferromagnetism : Effective quantum parameter, suppression of quantum corrections, and enhanced stability

- Physics
- 2009

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 the generalized…

Microscopic Theory of Nonlinear Spin Waves in Ferromagnets

- Physics
- 2011

Considering the attractive interaction between two magnons with opposite wave vectors in a Heisenberg ferromagnet, we propose the model of magnon-pairs, which is suitable for low-temperature…

The role of Hund's coupling in the stabilization of the (0, π) ordered spin density wave state within the minimal two-band model for iron pnictides.

- PhysicsJournal of physics. Condensed matter : an Institute of Physics journal
- 2011

The spin wave energies for the two-band model are very similar to the one-band t-t' Hubbard model results obtained earlier, and are in agreement with the findings from inelastic neutron scattering studies of iron pnictides.

Self-Consistent Second-Order Perturbation Theory of Correlation Effect in bcc Iron at Finite Temperatures

- Physics
- 2013

The self-consistent second-order perturbation theory is applied to a realistic multiband Hubbard model of bcc iron with realistic local Coulomb interaction terms, and both the single-electron Green's…

Correlation effect in bcc iron at finite temperatures

- Physics
- 2013

Self-consistent second-order perturbation theory is applied to a multi-band Hubbard model to study the static and the dynamical properties of iron at finite temperatures. Reasonable values of the…

Nonmonotonic thickness dependence of spin wave energy in ultrathin Fe films: Experiment and theory

- Physics
- 2010

In this work we present an experimental attempt to determine directly and systematically the properties of highenergy SWs in ferromagnetic Fe thin films of varying thickness. We discover that for the…

Effect of strain-induced orbital splitting on the magnetic excitations in undoped cuprates

- Materials Science
- 2021

We investigate the magnetic excitations in view of the recent reports suggesting that the spin-wave energy may exhibit a significant dependence on the in-plane strain of a thin film of…

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