%0 Journal Article
%T Monte Carlo Study of an Effective Ising Model for the Spin-ice type Kondo Lattice Model
%A Hiroaki Ishizuka
%A Masafumi Udagawa
%A Yukitoshi Motome
%J Physics
%D 2013
%I arXiv
%R 10.7566/JPSCP.3.014013
%X An effective Ising model for the spin-ice type Kondo lattice model is investigated by the classical Monte Carlo simulation. We clarify the magnetic phase diagram with four phases: ice-ferro, ice-(0,0,2\pi), 32-sublattice, and all-in/all-out ordered states. The result well reproduces the phase diagram of the Kondo lattice model studied previously [H. Ishizuka et al.: J. Phys. Soc. Jpn. 81 (2012) 113706], which suggests that the RKKY interactions up to third neighbors are sufficient to describe the magnetic properties of the itinerant electron model. We discuss the peculiar nature of phase transitions: the suppression of the critical temperatures down to zero temperature between two ice phases and the presence of the tricritical points on the phase boundary of the 32-sublattice ordered state.
%U http://arxiv.org/abs/1309.5167v1