ACOUSTIC MEASUREMENTS ON HIGH-Tc SUPERCONDUCTORS IN THE SYSTEMS Y–Ba–Cu–O AND Bi,Pb–Sr–Ca–Cu–O

Oxides and oxide superconductors :

“…For BSCCO, the measured sound velocities and elastic moduli show stiffening when temperature decreases in both polycrystals [98,197,201,202] and monocrystals [115,[198][199][200].…”

“…This is much higher than the measured bulk modulus for the single-crystal specimen [173], 115 GPa. Valkealahti and coworkers [181] Starting from the mean-field free energy, Millis and Rabe [183] [56,100,104,105,107,115,116,118,133,161,[184][185][186][187][188][189][190][191][192][193][194][195][196], BSCCO [98,115,160,[197][198][199][200][201][202], and TBCCO [203]; temperature dependence of internal friction and attenuation for LSCO [56,100,104,107,133,[187][188][189][190][191]…”