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research article
Ferroelectricity from spin supercurrents in LiCuVO4
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.
Type
research article
Web of Science ID
WOS:000288646100001
Authors
Publication date
2011
Published in
Volume
83
Issue
10
Article Number
100409(R)
Subjects
Peer reviewed
NON-REVIEWED
EPFL units
Available on Infoscience
March 22, 2011
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