Electric Control of Spin Helicity in a Magnetic Ferroelectric

Details Electric Control of Spin Helicity in a Magnetic Ferroelectric Electric Control of Spin Helicity in a Magnetic Ferroelectric

2007-01-18

arxiv.org/abs/cond-mat/0701430v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.100.219902

Magnetic ferroelectrics or multiferroics, which are currently extensively explored, may provide a good arena to realize a novel magnetoelectric function. Here we demonstrate the genuine electric control of the spiral magnetic structure in one of such magnetic ferroelectrics, TbMnO3. A spin-polarized neutron scattering experiment clearly shows that the spin helicity, clockwise or counter-clockwise, is controlled by the direction of spontaneous polarization and hence by the polarity of the small cooling electric field.

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