H.C. Dorn, C.S. Yannoni, et al.
Journal of Physical Chemistry®
Magnetic resonance force microscopy was used to study the behavior of small ensembles of unpaired electron spins in silica near a micrometer-size ferromagnetic tip. Using a cantilever-driven spin manipulation protocol and a magnetic field gradient greater than 105T/m, signals from as few as 100 net spins within a 20 nm thick resonant slice could be studied. A sixfold increase in the spin-lattice relaxation rate was found within 800 nm of the ferromagnet, while no effect due to silica surface proximity was detected. The results are interpreted in terms of Larmor-frequency magnetic field fluctuations emanating from the ferromagnet. © 2001 The American Physical Society.
H.C. Dorn, C.S. Yannoni, et al.
Journal of Physical Chemistry®
H.H. Limbach, H. Zimmermann, et al.
JACS
M. Poggio, C.L. Degen, et al.
Physical Review Letters
H.J. Mamin, H. Birk, et al.
Journal of Applied Physics