Theory of terahertz conductivity in the pseudogap phase of the cuprates: A preformed pair perspective

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 othe...

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Veröffentlicht in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2012-10, Vol.86 (13), Article 134519
Hauptverfasser: Wulin, Dan, Levin, K.
Format: Artikel
Sprache:eng
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Zusammenfassung: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 [sigma]( omega ) = [sigma] sub(1) ( omega ) + i[sigma] sub(2) ( omega ) measurements in the underdoped high-temperature superconductors and arrive at reasonable agreement between theory and recent experiment for both [sigma] sub(1) and [sigma] sub(2) above and below T sub(c).
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.86.134519