Absence of commensurate ordering at the polarization flop transition in multiferroic DyMnO3

J. Strempfer; B. Bohnenbuck; M. Mostovoy; N. Aliouane; D. N. Argyriou; F. Schrettle; J. Hemberger; A. Krimmel; M. v. Zimmermann

doi:10.1103/PhysRevB.75.212402

Absence of commensurate ordering at the polarization flop transition in multiferroic DyMnO3

Strongly Correlated Electrons 2009-11-13 v1

Authors: J. Strempfer , B. Bohnenbuck , M. Mostovoy , N. Aliouane , D. N. Argyriou , F. Schrettle , J. Hemberger , A. Krimmel , M. v. Zimmermann

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Abstract

Ferroelectric spiral magnets DyMnO3 and TbMnO3 show similar behavior of electric polarization in applied magnetic fields. Studies of the field dependence of lattice modulations on the contrary show a completely different picture. Whereas in TbMnO3 the polarization flop from P||c to P||a is accompanied by a sudden change from incommensurate to commensurate wave vector modulation, in DyMnO3 the wave vector varies continuously through the flop transition. This smooth behavior may be related to the giant magnetocapacitive effect observed in DyMnO3.

Keywords

multiferroic DyMnO3 polarization flop commensurate ordering incommensurate modulation magnetocapacitive effect

Cite

@article{arxiv.0704.1285,
  title  = {Absence of commensurate ordering at the polarization flop transition in multiferroic DyMnO3},
  author = {J. Strempfer and B. Bohnenbuck and M. Mostovoy and N. Aliouane and D. N. Argyriou and F. Schrettle and J. Hemberger and A. Krimmel and M. v. Zimmermann},
  journal= {arXiv preprint arXiv:0704.1285},
  year   = {2009}
}

Absence of commensurate ordering at the polarization flop transition in multiferroic DyMnO3

Abstract

Keywords

Cite

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