The linear chain molybdate Rb₂Cu₂Mo₃O₁₂ is one of the most intriguing species among linear quantum ferro-antiferromagnets. Its interesting property is the appearance of magnetoelectric response at temperatures above the onset of magnetic order. This has been interpreted as the emergence of chiral spin liquid state [1]. Recently, we reported the first comprehensive thermodynamic studies on single crystal samples. The entire low temperature magnetic phase diagram was mapped out [2]. We now report the first study of dielectric properties of Rb₂Cu₂Mo₃O₁₂ using single crystal samples.
[1] H. Ueda et al, Phys. Rev. B 101, 140408(R) (2020).
[2] S. Hayashida et al., Phys. Rev. B 100, 134427 (2019).