Direct observation of the precession of individual paramagnetic spins on oxidized silicon surfaces

Y. Manassen; R. J. Hamers; J. E. Demuth; A. J. Castellano Jr

doi:10.1103/PhysRevLett.62.2531

Direct observation of the precession of individual paramagnetic spins on oxidized silicon surfaces

Y. Manassen, R. J. Hamers, J. E. Demuth, and A. J. Castellano Jr.

Phys. Rev. Lett. 62, 2531 – Published 22 May 1989

Abstract

The precession of individual spins on partially oxidized Si(111) surfaces has been detected using a scanning tunneling microscope. The spin precession in a constant magnetic field induces a modulation in the tunneling current at the Larmor frequency. This radio-frequency signal is shown to be localized over distances less than 10 Å and follows the expected magnetic field dependence.