Berlin 2008 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 36: Superconductivity: Properties, Electronic Structure, Order Parameter
TT 36.1: Vortrag
Freitag, 29. Februar 2008, 10:15–10:30, H 0104
Electron-Phonon interaction in electron-doped graphites — •Lilia Boeri1, Ole Krogh Andersen1, Jun Sung Kim1, Reinhard Kremer1, Giovanni B. Bachelet2, and Matteo Giantomassi3 — 1Max-Planck-Institut für FestkörperForschung, Stuttgart, Germany — 2INFM SMC and Dipartimento di Fisica, Università "la Sapienza", Roma, Italy — 3UPCM, Université Catholique de Louvain, Louvain-la-Neuve,Belgium
The discovery of superconductivity in MgB2 has initiated a thorough search for new electron-phonon (e−ph) superconductors, particulary among hexagonal layered compounds.
In this talk I will describe, using ab-initio methods, the electron-phonon properties of two classes of recently discovered superconductors, namely alkali-earth intercalated graphites (highest Tc 15.1 K for CaC6)and metal-intercalated ternary compounds of the form: MaAlSi (highest Tc=7.8 K for CaAlSi).