Kondo-lattice model: Application to the temperature-dependent electronic structure of EuO(100) films

Details Kondo-lattice model: Application to the temperature-dependent electronic structure of EuO(100) films Kondo-lattice model: Application to the temperature-dependent electronic structure of EuO(100) films

2001-06-15

arxiv.org/abs/cond-mat/0106295v2

Phys. Rev. B 64, 134409 (2001)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevB.64.134409

We present calculations for the temperature-dependent electronic structure and magnetic properties of thin ferromagnetic EuO films. The treatment is based on a combination of a multiband-Kondo lattice model with first-principles TB-LMTO band structure calculations. The method avoids the problem of double-counting of relevant interactions and takes into account the correct symmetry of the atomic orbitals. We discuss the temperature-dependent electronic structures of EuO(100) films in terms of quasiparticle densities of states and quasiparticle band structures. The Curie temperature T_C of the EuO films turns out to be strongly thickness-dependent, starting from a very low value = 15K for the monolayer and reaching the bulk value at about 25 layers.

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