Ferromagnetic EuS films: Magnetic stability, electronic structure and magnetic surface states

Details Ferromagnetic EuS films: Magnetic stability, electronic structure and magnetic surface states Ferromagnetic EuS films: Magnetic stability, electronic structure and magnetic surface states

2004-03-02

arxiv.org/abs/cond-mat/0403075v1

Phys. Rev. B 69, 155425 (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures

Scientific paper

10.1103/PhysRevB.69.155425

We present the temperature and layer dependent electronic structure of a 20-layer EuS(100)-film using a combination of first-principles and model calculation, the latter based on the ferromagnetic Kondo-lattice. The calculated thickness-dependent Curie temperature agrees very well with experimental data. The projected 5d-bandstructure is at finite temperatures strongly influenced by damping effects due to spin exchange processes. Spin-split unoccupied 5d-surfaces states are found with a Stoner-like collapsing for increasing temperature towards the Curie point and with an exponential decay of spectral weight with increasing distance from the surface.

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