• Featured in Physics
  • Editors' Suggestion
  • Rapid Communication

Spin lifetime in small ensembles of electron spins measured by magnetic resonance force microscopy

K. C. Fong, M. R. Herman, P. Banerjee, D. V. Pelekhov, and P. C. Hammel
Phys. Rev. B 84, 220405(R) – Published 8 December 2011
Physics logo See Synopsis: Unmasking the True Spin Relaxation Time

Abstract

Magnetic resonance force microscopy can enable nanoscale imaging of spin lifetime. We report temperature-dependent measurements of the spin correlation time τm 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.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 28 July 2011

DOI:https://doi.org/10.1103/PhysRevB.84.220405

©2011 American Physical Society

Synopsis

Key Image

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.

See more in Physics

Authors & Affiliations

K. C. Fong

  • Applied Physics, California Institute of Technology, MC 128-95, Pasadena, California 91125, USA and
  • Department of Physics, Ohio State University, 191 West Woodruff Avenue, Columbus, Ohio 43210, USA

M. R. Herman, P. Banerjee, D. V. Pelekhov, and P. C. Hammel

  • Department of Physics, Ohio State University, 191 West Woodruff Avenue, Columbus, Ohio 43210, USA

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 84, Iss. 22 — 1 December 2011

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×