Magnetic properties of doped GdI2
Institut für Theoretische Physik, J.W. Goethe Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany
2 Max Planck Institut für Physik Komplexer Systeme, Nöthnitzer strasse 38, 01187 Dresden, Germany
3 Department of Physics and Centre for Theoretical Studies, Indian Institute of Technology, Kharagpur, 721302, India
Published online: 31 March 2006
Motivated by the recent experimental studies on layered ferromagnetic metallic system GdI2 and its doped variant GdI2Hx we develop a model to understand their ground state magnetic phase diagram. Based on first principle electronic structure calculations we write down a phenomenological model and solve it under certain approximations to obtain the ground state energy. In the process we work out the phase diagram of the correlated double exchange model on a triangular lattice for the specific band structure at hand.
PACS: 75.47.Gk – Colossal magnetoresistance / 75.30.Et – Exchange and superexchange interactions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2006