We report the synthesis of single crystals of Ce2SnS5 through a two-stage chemical vapor transport method. The Ce2SnS5 system is a member of the orthorhombic Pbam (No. 55) space group and realizes a distorted trigonal tricapped prism (TTP) crystal field around each cerium site. We characterized the sample through orientation-dependent magnetization and heat capacity measurements to probe the magnetic anisotropy in the system characteristic of XY-like anisotropic Heisenberg model behavior. Ce2SnS5 furthermore enters a zero-field ordered phase under TN= 2.4 K; powder neutron diffraction measurements reveal incommensurate magnetic order near TN. The system then locks into a commensurate, two-q magnetic structure below approximately 1.2 K. This commensurate structure belongs to the Shubnikov group Pb′a′m′ (MSG 55.359) and realizes the propagation vectors q=(1/3,0,0) and q=(0,0,0).
@article{arxiv.2503.08469,
title = {XY-like Incommensurate Magnetic Order in Ce$_2$SnS$_5$},
author = {Maximilien F. Debbas and Takehito Suzuki and Danielle R. Yahne and Joseph G. Checkelsky},
journal= {arXiv preprint arXiv:2503.08469},
year = {2025}
}