Temperature dependence of crystal field excitations in CuO

Simo Huotari; Laura Simonelli; Christoph J. Sahle; Marco Moretti Sala; Roberto Verbeni; Giulio Monaco

Temperature dependence of crystal field excitations in CuO

Strongly Correlated Electrons 2013-10-25 v1

Authors: Simo Huotari , Laura Simonelli , Christoph J. Sahle , Marco Moretti Sala , Roberto Verbeni , Giulio Monaco

Abstract

We report a study on the temperature dependence of the charge-neutral crystal field (dd) excitations in cupric oxide, using nonresonant inelastic x-ray scattering (IXS) spectroscopy. Thanks to a very high energy resolution (60 meV), we observe thermal effects on the dd excitation spectrum fine structure between temperatures of 10-320 K. With an increasing temperature, the spectra broaden considerably. We assign the temperature dependence of the dd excitations to the relatively large electron-phonon coupling.

Keywords

cupric oxide crystal field excitations inelastic x-ray scattering electron-phonon coupling temperature dependence dd excitations

Cite

@article{arxiv.1310.6730,
  title  = {Temperature dependence of crystal field excitations in CuO},
  author = {Simo Huotari and Laura Simonelli and Christoph J. Sahle and Marco Moretti Sala and Roberto Verbeni and Giulio Monaco},
  journal= {arXiv preprint arXiv:1310.6730},
  year   = {2013}
}

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5 pages, 2 figures

Temperature dependence of crystal field excitations in CuO

Abstract

Keywords

Cite

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