J. Warnock, D.D. Awschalom
Japanese Journal of Applied Physics
A scanning tunneling microscope is used to locally deposit arrays of nanometer-scale magnets directly within the superconducting planar input coil of an integrated dc SQUID microsusceptometer. Low-temperature frequency-dependent magnetic-susceptibility measurements reveal a narrow resonance which grows and becomes independent of decreasing temperature. Studies as a function of magnet volume, spacing, and applied field are compared to recent predictions for magnetic macroscopic quantum tunneling in small particles. © 1990 The American Physical Society.
J. Warnock, D.D. Awschalom
Japanese Journal of Applied Physics
Matthew P. A. Fisher, G. Grinstein
Physical Review Letters
G. Grinstein, T.C. Lubensky, et al.
Physical Review B
M. Kohl, M.R. Freeman, et al.
Physical Review B