Phys. Rev. Lett. 96, 067601 (2006) [4 pages]Ferroelectricity in Spiral MagnetsReceived 26 October 2005; published 15 February 2006 It was recently observed that the ferroelectrics showing the strongest sensitivity to an applied magnetic field are spiral magnets. We present a phenomenological theory of inhomogeneous ferroelectric magnets, which describes their thermodynamics and magnetic field behavior, e.g., dielectric susceptibility anomalies at magnetic transitions and sudden flops of electric polarization in an applied magnetic field. We show that electric polarization can also be induced at domain walls and that magnetic vortices carry electric charge. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.067601
DOI:
10.1103/PhysRevLett.96.067601
PACS:
77.80.Fm, 75.30.Fv, 75.60.Ch
See AlsoComment: M. Kenzelmann and A. B. Harris, Comment on “Ferroelectricity in Spiral Magnets”, Phys. Rev. Lett. 100, 089701 (2008). Reply: Maxim Mostovoy, Mostovoy Replies:, Phys. Rev. Lett. 100, 089702 (2008). |
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