Tricritical point and phase diagram based on critical scaling in monoaxial chiral helimagnet Cr1/3NbS2

Abstract

In this work, the magnetism of the single crystal Cr${}_{1/3}$NbS${}_2$, which exhibits chiral magnetic soliton lattice (CSL) state, is investigated. The magnetization displays strong magnetic anisotropy when the field is applied perpendicularly and parallel to the $c$-axis in low field region ($H<H_S$, $H_S$ is the saturation field). The critical exponents of Cr${}_{1/3}$NbS${}_2$ are obtained as $\beta =$ 0.370(4), $\gamma =$ 1.380(2), and $\delta =$ 4.853(6), which are close to the theoretical prediction of three-dimensional Heisenberg model. Based on the scaling equation and the critical exponents, the $H-T$ phase diagram in the vicinity of the phase transition is constructed, where two critical points are determined. One is a tricritical point which locates at the intersection between the CSL, forced ferromagnetic (FFM), and paramagnetic (PM) states. The other one is a critical point situated at the boundaries between CSL, helimagnetic (HM), and PM states.

Published in Physical Review B

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Cited by in corpus (9)

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• Comparative Electronic Structures of the Chiral Helimagnets Cr1/3NbS2 and Cr1/3TaS2
• An emergence of chiral helimagnetism or ferromagnetism governed by Cr intercalation in a dichalcogenide CrNb${}_3$S${}_6$
• Consequences and control of multi-scale (dis)order in chiral magnetic textures
• Persistent exchange splitting in a chiral helimagnet Cr1/3NbS2
• Energy-gap driven low-temperature magnetic and transport properties in Cr${}_{1/3}M$S${}_2$ ($M$ = Nb or Ta)
• Functional renormalization-group approach to the Pokrovsky-Talapov model via modified massive Thirring fermion model
• Temperature- and field angular-dependent helical spin period characterized by magnetic dynamics in a chiral helimagnet $MnN{b}_3{S}_6$
• Magnetism in $M_{1/3}$NbS${}_2$ ($M$ = Fe, V, Mn): insight into intercalated transition-metal dichalcogenides using $\mu$SR