J.C. Slonczewski, A.P. Malozemoff, et al.
Applied Physics Letters
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.
J.C. Slonczewski, A.P. Malozemoff, et al.
Applied Physics Letters
A.P. Malozemoff, S. Maekawa
Journal of Applied Physics
S.I. Woods, Nesco M. Lettsome, et al.
ISTFA 2003
S.I. Woods, S. Ingvarsson, et al.
Applied Physics Letters