Ferroelectricity from spin supercurrents in LiCuVO4

Article

关键词: MULTIFERROICS;    CHAIN;   

DOI  :  10.1103/PhysRevB.83.100409

来源: SCIE

【 摘 要 】

We have studied the magnetic structure of the ferroelectric frustrated spin-1/2 chain material LiCuVO4 in applied electric and magnetic fields using polarized neutrons. A symmetry and mean-field analysis of the data rules out the presence of static Dzyaloshinskii-Moriya interaction, while exchange striction is shown to be negligible by our specific-heat measurements. The experimentally observed magnetoelectric coupling is in excellent agreement with the predictions of a purely electronic mechanism based on spin supercurrents.

【 授权许可】

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