Multiple phase transitions and high-field quadrupolar order in a model for $\beta$-TeVO${}_4$

Abstract

Motivated by the complex behavior of the frustrated magnet $\beta$-TeVO${}_4$, we study an anisotropic Heisenberg model for coupled spin-$1/2$ zigzag chains. Using cluster mean field approach to capture quantum correlations we find, upon reducing temperature in the absence of applied field, (i) a partially ordered state, (ii) a collinear antiferromagnetic phase, and (iii) an elliptical spiral state characterized by finite vector chirality. For finite fields, we find metamagnetic response close to saturation magnetization. We show via explicit calculations that the quadrupolar order parameter is finite in the metamagnetic regime. The exchange parameters reported in the ab-initio study of $\beta$-TeVO${}_4$ are used in our study. We compare our results with those reported in recent experiments on $\beta$-TeVO${}_4$ and highlight similarities as well as differences between experimental results and our cluster mean field calculations.

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Cited by in corpus (4)

• The frustrated Ising model on the body-centered cubic lattice
• Thermal effects versus spin nematicity in a frustrated spin-1/2 chain
• Interplay of frustration and quantum fluctuations in a spin-1/2 anisotropic square lattice
• Magnetic-field-induced reorientation in the SDW and the spin-stripe phases of the frustrated spin-1/2 chain compound $\beta$-TeVO${}_4$