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arXiv · 1507.06457

Magnetism-driven ferroelectricity in spin-1/2 $XY$ chains

Oleg Menchyshyn·Vadim Ohanyan·Taras Verkholyak·Taras Krokhmalskii·Oleg Derzhko
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Abstract

We illustrate the magnetoelectric effect conditioned by the Katsura-Nagaosa-Balatsky (KNB) mechanism within the frames of exactly solvable spin-1/2 $XY$ chains. Due to three-spin interactions which are present in our consideration, the magnetization (polarization) is influenced by the electric (magnetic) field even in the absence of the magnetic (electric) field. We also discuss a magnetoelectrocaloric effect examining the entropy changes under the isothermal varying of the magnetic or/and electric field.

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Oleg Menchyshyn, Vadim Ohanyan, Taras Verkholyak, Taras Krokhmalskii, Oleg Derzhko. 2015-07-23. Magnetism-driven ferroelectricity in spin-1/2 $XY$ chains. https://doi.org/10.1103/physrevb.92.184427

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