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Physical Review Letters
Paper

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

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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 A and follows the expected magnetic field dependence. © 1989 The American Physical Society.

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Physical Review Letters

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