D.D. Awschalom, F.P. Milliken, et al.
Physical Review Letters
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.
D.D. Awschalom, F.P. Milliken, et al.
Physical Review Letters
M. Kohl, M.R. Freeman, et al.
Physical Review B - CMMP
D.D. Awschalom
IQEC 1990
Ravi Bhagavatula, G. Grinstein, et al.
Physical Review Letters