W. Reim, R.J. Gambino, et al.
Journal of Applied Physics
We analyze in detail a novel integrated SQUID technique for studying magnetic noise and susceptibility. In particular, we show how the susceptibility, π/2 rule and the fluctuation-dissipation theorem (FDT) are affected by large demagnetizing factors and by the geometry of our pickup and field coils. We present data on the spin glass Eu0.4Sr0.6S as a function of temperature. We confirm the FDT and show evidence against the conventional power-law dynamics in the spin-glass phase.
W. Reim, R.J. Gambino, et al.
Journal of Applied Physics
R.B. Laibowitz, R.H. Koch, et al.
High Temperature Superconducting Compounds 1990
S. Ingvarsson, Gang Xiao, et al.
Physical Review Letters
A. Hartstein, R.H. Koch
ICNN 1987