Carrier dynamics and infrared-active phonons in c-axis oriented RuSr$_2$GdCu$_2$O$_8$ film

A. P. Litvinchuk; S. Y. Chen; M. N. Iliev; C. L. Chen; C. W. Chu; V. N. Popov

doi:10.1016/S0921-4534(01)00607-4

Carrier dynamics and infrared-active phonons in c-axis oriented RuSr$_2$GdCu$_2$O$_8$ film

Superconductivity 2009-11-07 v2

Authors: A. P. Litvinchuk , S. Y. Chen , M. N. Iliev , C. L. Chen , C. W. Chu , V. N. Popov

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Abstract

The conductivity spectra of c-axis oriented thin RuSr $_2$ GdCu $_2$ O $_8$ film on SrTiO $_3$ substrate, prepared by pulsed-laser deposition, are obtained from the analysis of the reflectivity spectra over broad frequency range and temperatures between 10 and 300 K. The free charge carriers are found to be strongly overdamped with their scattering rate (1.0 eV at room temperature) exceeding the plasma frequency (0.55 eV). Four phonon lines are identified in the experimental spectra and assigned to the specific oxygen related in-plane polarized vibrations based on the comparison with the results of a lattice dynamics shell model calculations.

Keywords

carrier dynamics infrared-active phonons c-axis oriented film conductivity spectra overdamped carriers lattice dynamics shell model

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@article{arxiv.cond-mat/0105016,
  title  = {Carrier dynamics and infrared-active phonons in c-axis oriented RuSr$_2$GdCu$_2$O$_8$ film},
  author = {A. P. Litvinchuk and S. Y. Chen and M. N. Iliev and C. L. Chen and C. W. Chu and V. N. Popov},
  journal= {arXiv preprint arXiv:cond-mat/0105016},
  year   = {2009}
}

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3 pages, 4 figures

Carrier dynamics and infrared-active phonons in c-axis oriented RuSr$_2$GdCu$_2$O$_8$ film

Abstract

Keywords

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