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Sum rules and electrodynamics of high-Tccuprates in the pseudogap state
2002
Physical Review B (Condensed Matter)
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We explore connections between the electronic density of states (DOS) in a conducting system and the frequency dependence of the scattering rate 1/τ(ω) inferred from infrared spectroscopy. We show that changes in the DOS upon the development of energy gaps can be reliably tracked through the examination of the 1/τ(ω) spectra using the sum rules discussed in the text. Applying this analysis to the charge dynamics in high-T_c cuprates we found radically different trends in the evolution of the
doi:10.1103/physrevb.65.054516
fatcat:p5lhhi2uwrgrnglw76ov4nn544