期刊
PHYSICAL REVIEW LETTERS
卷 108, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.237201
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资金
- Engineering and Physical Sciences Research Council [EP/J003557/1] Funding Source: researchfish
- EPSRC [EP/J003557/1] Funding Source: UKRI
The coupling of magnetic chiralities to the ferroelectric polarization in multiferroic RbFe(MoO4)(2) is investigated by neutron spherical polarimetry. Because of the axiality of the crystal structure below T-c = 190 K, helicity and triangular chirality are symmetric-exchange coupled, explaining the onset of the ferroelectricity in this proper-screw magnetic structure-a mechanism that can be generalized to other systems with ferroaxial distortions in the crystal structure. With an applied electric field, we demonstrate control of the chiralities in both structural domains simultaneously.
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