Nuclear Spin Noise and STM Noise Spectroscopy

Details Nuclear Spin Noise and STM Noise Spectroscopy Nuclear Spin Noise and STM Noise Spectroscopy

2006-02-05

arxiv.org/abs/cond-mat/0602113v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages latex file, 4 eps figures

Scientific paper

We consider fluctuations of the electronic spin due to coupling to nuclear spin. Noise spectroscopy of an electronic spin can be revealed in the Scanning Tunnelling Microscope (STM). We argue that the noise spectroscopy of electronic spin can reveal the nuclear spin dynamics due to hyperfine coupling. Tunnelling current develops satellites of the main lines at Larmor frequency and at zero frequency due to hyperfine coupling. We also address the role of the rf field that is at or near the resonance with the nuclear hyperfine field. This approach is similar to Electron Nuclear Double Resonance (ENDOR), in that is allows one to detect nuclear spin dynamics indirectly through its effect on electronic spin.

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