Critical phenomenon and phase diagram of Mn-intercalated layered MnNb3S6

Yuhui Dai; Wei Liu; Yamei Wang; Jiyu Fan; Li Pi; Lei Zhang; Yuheng Zhang

doi:10.1088/1361-648X/aafebc

Critical phenomenon and phase diagram of Mn-intercalated layered MnNb₃S₆

J Phys Condens Matter. 2019 May 15;31(19):195803. doi: 10.1088/1361-648X/aafebc. Epub 2019 Jan 15.

Authors

Yuhui Dai¹, Wei Liu, Yamei Wang, Jiyu Fan, Li Pi, Lei Zhang, Yuheng Zhang

Affiliation

¹ Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People's Republic of China. University of Science and Technology of China, Hefei 230026, People's Republic of China.

PMID: 30645981
DOI: 10.1088/1361-648X/aafebc

Abstract

The magnetization of Mn-intercalated layered MnNb₃S₆ single crystal has been systematically investigated. The angle-dependent magnetization ([Formula: see text], [Formula: see text], and [Formula: see text]) displays that the magnetization of MnNb₃S₆ with [Formula: see text] is much stronger than that with H//c, but no magnetic anisotropy within the ab-plane. In addition, a field-induced magnetic phase transition is found when [Formula: see text]. The investigation of the critical behavior gives the critical exponents [Formula: see text], [Formula: see text], and [Formula: see text] with [Formula: see text] K, which belong to the universality class of three-dimensional Heisenberg model. The critical behavior and exponents indicate that the magnetic coupling in MnNb₃S₆ is of an isotropic short-range type. Based on universality scaling, the H - T phase diagram with [Formula: see text] is constructed. The magnetic behaviors and phase diagram of MnNb₃S₆ are analogous to those of CrNb₃S₆ which exhibits a chiral magnetic soliton lattice.