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arxiv: cond-mat/9908368 · v2 · submitted 1999-08-26 · ❄️ cond-mat.supr-con

Low Temperature AC Conductivity in BSCCO (2212)

J. Corson (1) , R. Mallozzi (1) , J. Orenstein (1) , J. N. Eckstein (2) , I. Bozovic (3) ((1) UC Berkeley , Lawrence Berkeley National Lab , (2) Univ. of Illinois at Urbana , (3) Oxxel GmbH) This is my paper
classification ❄️ cond-mat.supr-con
keywords conductivitydissipativebsccodopingresidualtemperaturesanamolouslybisrcacuo
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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.

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