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Possible display of phason mode of electromagnons in TbMnO3

Other Condensed Matter 2007-05-23 v1
Authors: I. E. Chupis
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Abstract

The interaction of light in terahertz frequency region with electromagnons in a sinusoidal incommensurate magnetic state in TbMnO3 is studied. A significant change in the frequency dependence of the dielectric constant e_zz near the temperature of the phase transition from sinusoidal magnetic ordering to spiral spin structure with a spontaneous electric poiarization is predicted. Phason mode of this phase transition is the mode of electromagnon with ME coupling proportional to the wave number of modulation structure.

Keywords

electromagnons phason mode TbMnO3 terahertz dielectric constant sinusoidal incommensurate magnetic state magnetoelectric coupling

Cite

@article{arxiv.cond-mat/0702636,
  title  = {Possible display of phason mode of electromagnons in TbMnO3},
  author = {I. E. Chupis},
  journal= {arXiv preprint arXiv:cond-mat/0702636},
  year   = {2007}
}

Comments

5 pages, 1 figure

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