Force-detected magnetic resonance in a field gradient of 250 000 Tesla per meter

K. J. Bruland; W. M. Dougherty; J. L. Garbini; J. A. Sidles; S. H. Chao

doi:10.1063/1.122705

Force-detected magnetic resonance in a field gradient of 250 000 Tesla per meter

K. J. Bruland, W. M. Dougherty, J. L. Garbini, J. A. Sidles, S. H. Chao

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

We report the detection of slice-selective electron spin resonance with an external magnetic field gradient comparable to local interatomic gradients, using the techniques of magnetic resonance force microscopy. An applied microwave field modulated the spin-gradient force between a paramagnetic DPPH sample and a micrometer-scale ferromagnetic tip on a force microscope cantilever. A sensitivity equivalent to 184 polarized electron moments in a one-Hertz detection bandwidth was attained. We mapped the tip magnetic field with a resonant slice thickness of order one nanometer, thereby demonstrating magnetic resonance on length scales comparable to molecular dimensions.

Original language	English (US)
Pages (from-to)	3159-3161
Number of pages	3
Journal	Applied Physics Letters
Volume	73
Issue number	21
DOIs	https://doi.org/10.1063/1.122705
State	Published - Dec 1 1998
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.122705

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abstract = "We report the detection of slice-selective electron spin resonance with an external magnetic field gradient comparable to local interatomic gradients, using the techniques of magnetic resonance force microscopy. An applied microwave field modulated the spin-gradient force between a paramagnetic DPPH sample and a micrometer-scale ferromagnetic tip on a force microscope cantilever. A sensitivity equivalent to 184 polarized electron moments in a one-Hertz detection bandwidth was attained. We mapped the tip magnetic field with a resonant slice thickness of order one nanometer, thereby demonstrating magnetic resonance on length scales comparable to molecular dimensions.",

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AU - Dougherty, W. M.

AU - Garbini, J. L.

AU - Sidles, J. A.

AU - Chao, S. H.

PY - 1998/12/1

Y1 - 1998/12/1

N2 - We report the detection of slice-selective electron spin resonance with an external magnetic field gradient comparable to local interatomic gradients, using the techniques of magnetic resonance force microscopy. An applied microwave field modulated the spin-gradient force between a paramagnetic DPPH sample and a micrometer-scale ferromagnetic tip on a force microscope cantilever. A sensitivity equivalent to 184 polarized electron moments in a one-Hertz detection bandwidth was attained. We mapped the tip magnetic field with a resonant slice thickness of order one nanometer, thereby demonstrating magnetic resonance on length scales comparable to molecular dimensions.

AB - We report the detection of slice-selective electron spin resonance with an external magnetic field gradient comparable to local interatomic gradients, using the techniques of magnetic resonance force microscopy. An applied microwave field modulated the spin-gradient force between a paramagnetic DPPH sample and a micrometer-scale ferromagnetic tip on a force microscope cantilever. A sensitivity equivalent to 184 polarized electron moments in a one-Hertz detection bandwidth was attained. We mapped the tip magnetic field with a resonant slice thickness of order one nanometer, thereby demonstrating magnetic resonance on length scales comparable to molecular dimensions.

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Force-detected magnetic resonance in a field gradient of 250 000 Tesla per meter

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