Cycloidal Order of 4f Moments as a Probe of Chiral Domains in DyMnO3

E. Schierle, V. Soltwisch, D. Schmitz, R. Feyerherm, A. Maljuk, F. Yokaichiya, D. N. Argyriou, and E. Weschke
Phys. Rev. Lett. 105, 167207 – Published 15 October 2010

Abstract

Using soft x-ray diffraction at the Dy-M5 resonance, pronounced circular dichroism in the ferroelectric phase of DyMnO3 is observed in connection with sizable b and c components of the Dy-4f magnetic moments. This provides strong evidence for cycloidal order of the 4f moments, corroborating that inversion-symmetry breaking in this material is not accomplished by the Mn spins alone. The 4f circular dichroism allows us to image multiferroic domains that are imprinted on the surface of DyMnO3 using the local charging by the x-ray beam via the photoelectric effect.

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  • Received 6 February 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.167207

© 2010 The American Physical Society

Authors & Affiliations

E. Schierle1, V. Soltwisch1, D. Schmitz1, R. Feyerherm1, A. Maljuk2, F. Yokaichiya2, D. N. Argyriou2,*, and E. Weschke1,†

  • 1Helmholtz-Zentrum Berlin für Materialien und Energie, Wilhelm-Conrad-Röntgen-Campus BESSY II, Albert-Einstein-Str. 15, D-12489 Berlin, Germany
  • 2Helmholtz-Zentrum Berlin für Materialien und Energie, Lise-Meitner-Campus, Hahn-Meitner-Platz 1, D-14109, Berlin, Germany

  • *argyriou@helmholtz-berlin.de
  • eugen.weschke@helmholtz-berlin.de

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Vol. 105, Iss. 16 — 15 October 2010

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