Ferroelectricity in a quantum chain magnet.

ORAL

Abstract

Multiferroics with enhanced cross-coupling effects exhibit magnetic orders with broken centrosymmetry. It turns out that the lattice relaxation through exchange striction associated with the magnetic orders with non-centrocymetry is the origin of magnetism-induced ferroelectricity. Among the exchange strictions, the Dzyaloshinskii-Moriya type interaction becomes active when ferroelectricty is induced by spiral magnetic orders. Herein, we report our suprising discovery that a quantum chain magnet exhibits ferroelectricity when the spiral magnetic order sets in.

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Authors

  • S. Park

    • Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854
    • Department of Physics, Rutgers University
    • Rutgers University

  • Y.J. Choi

  • C.L. Zhang

  • S-W. Cheong

    • Rutgers Center for Emergent Materials and Department of Physics \& Astronomy, Rutgers University, Piscataway, New Jersey 08854