Condensed Matter Physics Seminar
Thursday, May 6, 1999, 4 p.m.
Physics Building, Room 1219
The strange interplane conductivity of high-temperature superconductors
Andrew Millis
(Department of Physics and Astronomy, Rutgers University)
Abstract: The frequency and temperature dependence of
the interplane conductivity of high-temperature superconductors has puzzled
scientists for almost a decade, and has been argued to provide evidence
in favor of an interlayer pairing mechanism for high-Tc superconductivity.
I will show that the anomalous features are straightforward consequences
of the existence, in a certain temperature regime, of superconducting pairing
without long ranged order, and will argue that the temperature and frequency
dependence of the c-axis conductivity can be used to infer information
about the strength of quantum fluctuations in the superconducting ground
state. This work is done in collaboration with L. B. Ioffe and supported
by NSF-DMR-9707701.
Host: Dennis Drew
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