Theory of terahertz conductivity in the pseudogap phase of the cuprates: A preformed pair perspective
Dan Wulin, K. Levin
DOI 10.1103/PhysRevB.86.134519 · Physical Review B
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Abstract
In this paper we deduce transport properties in the presence of a pseudogap associated with precursor superconductivity. Our theoretical analysis is based on the widely adopted self-energy expression reflecting this normal state gap, which has appeared in interpretations of photoemission and in other experiments. Thus, it should be generally applicable. Here we address THz conductivity σ(ω)=σ1(ω)+iσ2(ω) measurements in the underdoped high-temperature superconductors and arrive at reasonable agreement between theory and recent experiment for both σ1 and σ2 above and below Tc.
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