Monte Carlo Study of an Effective Ising Model for the Spin-ice type Kondo Lattice Model

Abstract

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-(0,0,2π), 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.

6 pages, 2 figures

References in corpus (5)

• Non-Kondo mechanism for resistivity minimum in spin ice conduction systems
• Ordering of the pyrochlore Ising model with the long-range RKKY interaction
• Phase competition in the double-exchange model on the frustrated pyrochlore lattice
• Spontaneous Spatial Inversion Symmetry Breaking and Spin Hall Effect in a Spin-ice Double-exchange Model on a Pyrochlore Lattice
• Magnetic Order and Charge Disproportionation in a Spin-ice type Kondo Lattice Model: Large Scale Monte Carlo Study

Cited by in corpus (2)

• When opposites repel: from metastability to extended chiral spin textures in spin ice with short-range topological-defect interactions
• Experimental signatures of versatile Weyl semimetal in pyrochlore iridate with spin-ice like magnetic orders