Direct Observation of the Precession of Individual Paramagnetic Spins on Oxidized Silicon Surfaces.

摘要

The precession of individual spins on partially oxidized Si(111) (Silicon) 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. STM, Mechanics, Reprints, Spin states, Atomic properties, Paramagnetic resonance, ESR, Magnetic properties, Inorganic chemistry. (jg)