Hybrid improper ferroelectricity: a mechanism for controllable polarization-magnetization coupling

First-principles calculations are presented for the layered perovskite Ca3Mn2O7. The results reveal a rich set of coupled structural, magnetic, and polar domains in which oxygen octahedron rotations induce ferroelectricity, magnetoelectricity, and weak ferromagnetism. The key point is that the rotat...

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Veröffentlicht in:	Physical review letters 2011-03, Vol.106 (10), p.107204-107204, Article 107204
Hauptverfasser:	Benedek, Nicole A, Fennie, Craig J
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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