Monte Carlo Simulation of Triangular Antiferromagnets with Easy-axis Anisotropy

Posted on by Natsuhiko Sato

Comprehensive experimental studies by magnetic, thermal and neutron measurements have clarified that Rb4Mn(MoO4)3 is a model system of a quasi-2D triangular Heisenberg antiferromagnet with an easy-axis anisotropy, exhibiting successive transitions across an intermediate collinear phase. As a rare case for geometrically frustrated magnetism, quantitative agreement between experiment and theory is found for complete, anisotropic phase diagrams as well as magnetic properties.

Fig. 1: Structure of Rb4Mn(MoO4)3
Fig. 2: Phase diagram

(by Shu Tanaka)

Reference

[1]Rieko Ishii, Shu Tanaka, Keisuke Onuma, Yusuke Nambu, Masashi Tokunaga, Toshiro Sakakibara, Naoki Kawashima, Yoshiteru Maeno, Collin Broholm, Dixie P. Gautreaux, Julia Y. Chan, and Satoru Nakatsuji, Europhysics Letters 94, 17001 (2011).