Ferroelectricity induced by spin-dependent metal-ligand hybridization in Ba₂CoGe₂O₇.

Abstract

We have investigated the variation of induced ferroelectric polarization under a magnetic field with various directions and magnitudes in a staggered antiferromagnet Ba₂CoGe₂O₇. While the ferroelectric polarization cannot be explained by the well-accepted spin current model nor the exchange striction mechanism, we have shown that it is induced by the spin… (More)

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