Measurement of Transport Lifetime in a Cuprate Superconductor
  We report measurements of the phase of the conductivity, $\phi_\sigma\equiv arg(\sigma)$, in the normal state of a $Bi_{2}Sr_{2}CaCu_{2}O_{8+\delta}$ (BSCCO) thin film from 0.2-1.0 THz. From $\phi_\sigma$ we obtain the time delay of the current response, $\tau_\sigma\equiv\phi_\sigma/\omega$. After discovering a systematic error in the data analysis, the extracted $\tau_\sigma$ has changed from that reported earlier. The revised data is shown in the sole figure below. Analysis and discussion of these data will follow. 
J. Corson, J. Orenstein (University of California, Berkeley) Seongshik   Oh, J. O'Donnel, J. N. Eckstein (University of Illi...