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Top: Photograph of our probehead mounted on the end of an Oxford Heliox cryostat with dual three-axis nanopositioners. Bottom: Schematic of NMRFM setup at the sample plate on the probehead. Laser light from a fiber interferometer is reflected from a silicon cantilever with a mounted sample. A gradient magnet scans along the direction while the rf coil provides modulation pulses along the direction.
One-dimensional scan results with accompanying frequency shift. The shift is consistent with that expected for the calculated magnetic field distribution due to the field gradient magnet (see text).
Spin nutation signal shown across multiple periods. is calculated using , where is the gyromagnetic ratio and is the length of the pulse.
Spin echo centered at .
Power spectral density of cantilever.
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