Low Temperature AC Conductivity in BSCCO (2212)
arXiv:cond-mat/9908368 · doi:10.1016/S0921-4526(99)01580-X
Abstract
We report measurements of anamolously large dissipative conductivities in BiSrCaCuO(2212) at low temperatures. We have measured the complex conductivity of BSCCO thin films at 100-600 GHz as a function of doping from the underdoped to the overdoped state. At low temperatures there exists a residual dissipative conductivity which scales with the T=0 superfluid density as the doping is varied. This residual dissipative conductivity is larger than the possible contribution from a thermal population of quasiparticles at the d-wave gap nodes.
Submitted to the Proceedings of the 22nd International Low Temperature Physics Conference. To be published in Physica B (http://www.elsevier.nl/locate/physb); 2 Pages with 2 Figures