Regensburg 2010 – scientific programme
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MM: Fachverband Metall- und Materialphysik
MM 51: Electronic Properties I
MM 51.1: Talk
Thursday, March 25, 2010, 10:15–10:30, H5
Momentum resolved Eliashberg function calculations within the KKR formalism — •Sergiy Mankovsky, Jan Minar, and Hubert Ebert — Dept. Chemie und Biochemie/Phys. Chemie, Universität München, Butenandtstr. 11, D-81377, München, Germany
We present an expression for the calculation of the momentum resolved Eliaschberg function α2F(ω, k→) within the KKR Green’s function formalism. All underlying calculations of the electron-phonon matrix elements as well as of the phonon energies are based on ab-initio electronic structure calculations performed using the fully relativistic spin-polarised KKR band structure method. Applications have been done for various non-magnetic as well as for magnetic systems. The Eliaschberg function obtained within these calculations have been used to evaluate the electron-phonon self-energy Σk→. The self-energies obtained are compared with those obtained from angle resolved photo-emission spectroscopy (ARPES). In all cases studied so far a very satisfying agreement was achieved.