R.D. Murphy, R.O. Watts
Journal of Low Temperature Physics
We report a small roughly logarithmic increase with frequency of the apparent transition temperature in ac susceptibility experiments on a Y-Ba-Cu-O superconducting crystal. Magnetic field enhances the effect. A flux creep model predicts the correct order of magnitude and implies that the transitions previously used to determine the upper-critical field Hc2 actually represent an "irreversibility" line. © 1988 The American Physical Society.
R.D. Murphy, R.O. Watts
Journal of Low Temperature Physics
Andreas C. Cangellaris, Karen M. Coperich, et al.
EMC 2001
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
T. Schneider, E. Stoll
Physical Review B