Eur. Phys. J. B 49, 433-439 (2006)
https://doi.org/10.1140/epjb/e2006-00090-4

Magnetic properties of doped GdI₂

¹ 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

Corresponding authors: ^a maitra@itp.uni-frankfurt.de - ^b yaresko@mpipks-dresden.mpg.de

Received: 14 November 2005
Published online: 31 March 2006

Abstract

Motivated by the recent experimental studies on layered ferromagnetic metallic system GdI₂  and its doped variant GdI₂H_x 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.