Ferroelectricity in the Magnetic E-Phase of Orthorhombic Perovskites

Journal Article · Sat Dec 31 23:00:00 EST 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.97.227204· OSTI ID:931863

Sergienko, Ivan A ^[1]; Sen, Cengiz ^[2]; Dagotto, Elbio R ^[1]

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1. ORNL
2. Florida State University

We show that the symmetry of the spin zigzag chain E phase of the orthorhombic perovskite manganites and nickelates allows for the existence of a finite ferroelectric polarization. The proposed microscopic mechanism is independent of spin-orbit coupling. We predict that the polarization induced by the E-type magnetic order can potentially be enhanced by up to 2 orders of magnitude with respect to that in the spiral magnetic phases of TbMnO3 and similar multiferroic compounds.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 931863
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Vol. 97; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
FERROELECTRIC MATERIALS
MAGNETIC PROPERTIES
MANGANESE OXIDES
NICKELATES
ORTHORHOMBIC LATTICES
PEROVSKITES
POLARIZATION
SYMMETRY