158 citations · 682 across the 18 of their papers we have counts for
9 papers · 1 filter
The absence of intraband scattering in a consistent theory of Gilbert damping in metallic ferromagnets
D. M. Edwards
Damping of magnetization dynamics in a ferromagnetic metal is usually characterized by the Gilbert parameter alpha. Recent calculations of this quantity, using a formula due to Kam…
A Green's function decoupling scheme for the Edwards fermion-boson model
D M Edwards, S Ejima, A Alvermann +1
Holes in a Mott insulator are represented by spinless fermions in the fermion-boson model introduced by Edwards. Although the physically interesting regime is for low to moderate f…
Analytical calculation of the Green's function and Drude weight for a correlated fermion-boson system
A Alvermann, D M Edwards, H Fehske
In classical Drude theory the conductivity is determined by the mass of the propagating particles and the mean free path between two scattering events. For a quantum particle this…
Ferromagnetism and electron-phonon coupling in the manganites
D. M. Edwards
The physics of ferromagnetic doped manganites, such as \chem{La_{1-x}Ca_xMnO_3} with --0.4, is reviewed. The concept of double exchange is discussed within the general…
Spectral properties of the Holstein double-exchange model and application to manganites
M. Hohenadler, D. M. Edwards
Calculations of one-electron spectral functions, optical conductivity and spin-wave energy in the Holstein double-exchange model are made using the many-body coherent potential app…
Magnetic susceptibility of the double exchange model
A. C. M. Green, D. M. Edwards
Previously a many-body coherent potential approximation (CPA) was used to study the double exchange (DE) model with quantum local spins S, both for S=1/2 and for general S in the p…
Electronic structure and resistivity of the double exchange model
D. M. Edwards, A. C. M. Green, K. Kubo
The double exchange (DE) model with quantum local spins S is studied; an equation of motion approach is used and decoupling approximations analogous to Hubbard's are made. Our appr…
Magnetism and Electronic States of Systems with Strong Hund Coupling
K. Kubo, D. M. Edwards, A. C. M. Green +2
This paper is a brief review of our recent studies concerning on magnetism and electronic states of lattice systems with Hund coupling. First we examined the effectiveness of the H…
Fundamental Oscillation Periods of the Interlayer Exchange Coupling beyond the RKKY Approximation
M. S. Ferreira, J. d'Albuquerque e Castro, D. M. Edwards +1
A general method for obtaining the oscillation periods of the interlayer exchange coupling is presented. It is shown that it is possible for the coupling to oscillate with addition…