Ferroelectricity in an ising chain magnet.

Ferroelectricity in an ising chain magnet. Research Abstract Details 

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Ferroelectricity in an ising chain magnet. Abstract Text:

Y J Choi,H T Yi,S Lee,Q Huang,V Kiryukhin,S-W Cheong,

We report discovery of collinear-magnetism-driven ferroelectricity in the Ising chain magnet Ca3Co2-xMnxO6 (x approximately 0.96). Neutron diffraction shows that Co2+ and Mn4+ ions alternating along the chains exhibit an up-up-down-down ( upward arrow upward arrow downward arrow downward arrow) magnetic order. The ferroelectricity results from the inversion symmetry breaking in the upward arrow upward arrow downward arrow downward arrow spin chain with an alternating charge order. Unlike in spiral magnetoelectrics where antisymmetric exchange coupling is active, the symmetry breaking in Ca3(Co,Mn)2O6 occurs through exchange striction associated with symmetric superexchange.

Ferroelectricity in an ising chain magnet. Publishing Authors By Initials

YJ Choi,HT Yi,S Lee,Q Huang,V Kiryukhin,SW Cheong,

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Ferroelectricity in an ising chain magnet. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Physical review letters

VOLUME: 100

Page Numbers: 047601

Journal Abbreviation: Phys. Rev. Lett.

ISSN: 0031-9007

DAY: 29

MONTH: 01

YEAR: 2008

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LANGUAGE: eng

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AFFILIATION: Rutgers Center for Emergent Materials and Department of Physics & Astronomy, 136 Frelinghuysen Road, Piscataway, New Jersey, 08854, USA.

Country: United States

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MEDLINETA: Phys Rev Lett

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