Doping dependent evolution of infrared spectra in underdoped YBa2Cu3Oy in terms of two-component optical conductivity |
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Authors: | Y.S. Lee |
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Affiliation: | Department of Physics, University of California at San Diego, La Jolla, CA 92093-0319, USA |
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Abstract: | In access to optical spectroscopy of heavily underdoped detwinned YBa2Cu3Oy (YBCO) crystals, we re-examine the doping dependent evolution of infrared spectra in the CuO2 plane of underdoped YBCO in terms of two-component optical conductivity. The extended Drude model analysis is applied to the two-component conductivity, and the results are compared with experimental data in the pseudogap state. We demonstrate that a model consisting of a Drude and Lorentz oscillator components reproduces characteristics of infrared spectra in underdoped YBCO. |
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Keywords: | 74.25 Gz 74.72 Bk |
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