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Nuclear magnetic resonance force microscopy with a microwire rf source
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10.1063/1.2752536
/content/aip/journal/apl/90/26/10.1063/1.2752536
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/26/10.1063/1.2752536
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color) (a) Scanning electron micrograph of the Cu microwire with integrated FeCo tip. (b) Representation of the experimental apparatus at the bottom of the cryostat (the relative scale of the components has been slightly altered). , the cantilever shaft, and the axis of the magnetic tip are aligned along . Current flows in the wire along , while at the position of the sample, the lever displacement and are directed along . (c) Schematic diagram of the electrical connections to the microwire.

Image of FIG. 2.
FIG. 2.

(Color online) Power spectral density of cantilever displacement during adiabatic rapid passage of a statistical polarization of spins. The inset represents the frequency sweep of that induces the passages.

Image of FIG. 3.
FIG. 3.

(Color online) (a) rf pulse protocol for the spin nutation experiment. The resulting power spectral density of cantilever displacement with pulse widths equivalent to (b) 0, (c) , and (d) radians of nutation. (e) The corresponding force signal is measured through a narrow band lock-in amplifier and plotted in points as a function of pulse width . A amplitude can be extracted from a decaying cosinusoidal fit of the Rabi oscillations shown in red.

Image of FIG. 4.
FIG. 4.

(Color online) Plot of the as a function of in the sample at . Red line corresponds to the limit set on by the adiabatic condition and is calculated using numerical integration of the Bloch equations for repetitive linear frequency sweeps of through resonance (Ref. 13 ).

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/content/aip/journal/apl/90/26/10.1063/1.2752536
2007-06-26
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Nuclear magnetic resonance force microscopy with a microwire rf source
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/26/10.1063/1.2752536
10.1063/1.2752536
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