Sum rules and electrodynamics of high-Tc cuprates in the pseudogap state

Details Sum rules and electrodynamics of high-Tc cuprates in the pseudogap state Sum rules and electrodynamics of high-Tc cuprates in the pseudogap state

2001-03-26

arxiv.org/abs/cond-mat/0103507v1

Phys.Rev.B Vol.65, 054516 (2002).

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.65.054516

We explore connections between the electronic density of states (DOS) in a conducting system and the frequency dependence of the scattering rate $1/\tau(\omega)$ 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 $1/\tau(\omega)$ 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 DOS in the pseudogap state and in the superconducting state.

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