Abstract
Magnetic resonance force microscopy can enable nanoscale imaging of spin lifetime. We report temperature-dependent measurements of the spin correlation time of the statistical fluctuations of the spin polarization—the spin noise—of ensembles containing 100 electron spins by this technique. Magnetomechanical relaxation due to spin-cantilever coupling was controlled and spurious mechanisms that can affect the spin correlation time of the microscopic signal were characterized. These measurements have ramifications for optimizing spin sensitivity, understanding local spin dynamics, and for nanoscale imaging.
- Received 28 July 2011
DOI:https://doi.org/10.1103/PhysRevB.84.220405
©2011 American Physical Society
Synopsis
Unmasking the True Spin Relaxation Time
Published 8 December 2011
The experimental artifacts known to disrupt magnetic force microscopy measurements of small spin samples can be identified and removed.
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