Electron-phonon coupling in DyFeO3 revealed by infrared spectroscopy

A. D. LaForge; J. Whalen; T. Siegrist; A. P. Ramirez; Z. Schlesinger

Electron-phonon coupling in DyFeO3 revealed by infrared spectroscopy

Strongly Correlated Electrons 2013-02-14 v1

Authors: A. D. LaForge , J. Whalen , T. Siegrist , A. P. Ramirez , Z. Schlesinger

Abstract

We have investigated crystal field and phonon dynamics of the multiferroic orthoferrite DyFeO $_3$ via polarized infrared spectroscopy. Reflectance of single crystals was measured in the far- to mid-infrared spectral range at range of temperatures from 10-295 K. We observe a strongly anisotropic phonon spectrum which differs from earlier lattice dynamical calculations in its symmetry, as well as a mode with significant and unusual temperature dependence that we interpret as a coupled phonon-crystal-field excitation.

Keywords

electron-phonon coupling infrared spectroscopy DyFeO3 crystal field phonon dynamics multiferroic

Cite

@article{arxiv.1302.2989,
  title  = {Electron-phonon coupling in DyFeO3 revealed by infrared spectroscopy},
  author = {A. D. LaForge and J. Whalen and T. Siegrist and A. P. Ramirez and Z. Schlesinger},
  journal= {arXiv preprint arXiv:1302.2989},
  year   = {2013}
}

Comments

5 pages, 5 figures

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