Temperature-dependent quasiparticle band structure of the ferromagnetic semiconductor EuS

Details Temperature-dependent quasiparticle band structure of the ferromagnetic semiconductor EuS Temperature-dependent quasiparticle band structure of the ferromagnetic semiconductor EuS

2002-06-24

arxiv.org/abs/cond-mat/0206449v1

Phys. Rev. B 66, 085205 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 12 figures

Scientific paper

10.1103/PhysRevB.66.085205

We present calculations for the temperature-dependent electronic structure of the ferromagnetic semiconductor EuS. A combination of a many-body evaluation of a multiband Kondo-lattice model and a first-principles T=0--bandstructure calculation (tight-binding linear muffin-tin orbital (TB-LMTO)) is used to get realistic information about temperature- and correlation effects in the EuS energy spectrum. The combined method strictly avoids double-counting of any relevant interaction. Results for EuS are presented in terms of spectral densities, quasiparticle band structures and quasiparticle densities of states, and that over the entire temperature range.

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