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arXiv · 1609.06087

Multiferroic phases of the frustrated quantum spin-chain compound linarite

K. Yu. Povarov·Y. Feng·A. Zheludev
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Abstract

The dielectric properties of the prototypical frustrated ferromagnetic spin-chain compound PbCuSO$_4$(OH)$_2$ known as linarite, are studied across its strongly anisotropic magnetic phase diagram in single crystal samples. The ferroelectric character of the principal low-field spin spiral phase is confirmed. The measured polarization is fully consistent with the previously proposed magnetic structure. Spontaneous polarization is also detected in two other field-induced phases but in some cases is incompatible with previously suggested models for the spin arrangement.

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K. Yu. Povarov, Y. Feng, A. Zheludev. 2016-09-20. Multiferroic phases of the frustrated quantum spin-chain compound linarite. https://doi.org/10.1103/physrevb.94.214409

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