Microwave Spectroscopy of Thermally Excited Quasiparticles in YBa_2Cu_3O_{6.99}

A. Hosseini, R. Harris, Saeid Kamal +5

We present here the microwave surface impedance of a high purity crystal of $YB{a}_{2}C{u}_3{O}_{6.99}$ measured at 5 frequencies between 1 and 75 GHz. This data set reveals the main featu…