Normal-state charge dynamics of ternary platinum germanide superconductor La2Pt3Ge5

Title & Authors
Normal-state charge dynamics of ternary platinum germanide superconductor La2Pt3Ge5
Song, S.J.; Sung, N.H.; Cho, B.K.; Moon, S.J.;

Abstract
We report on the infrared spectroscopic studies of the normal-state electronic response of rare-earth ternary platinum germanide superconductor $\small{La_2Pt_3Ge_5}$. We analyzed the temperature-dependent optical conductivity spectra using the Drude-Lorentz oscillator model. We found that the two Drude responses with distinct scattering rates are required to explain the charge dynamics at 10 K while a single Drude mode could reproduce the far-infrared conductivity at higher temperatures. Our results indicated the two-band character of the electronic structure and highlighted the disparate temperature evolution of the electrodynamics of the two electronic states.
Keywords
$\small{La_2Pt_3Ge_5}$;multiband;infrared spectroscopy;optical conductivity;
Language
English
Cited by
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