Force-gradient detected nuclear magnetic resonance

Sean R. Garner; Seppe Kuehn; Jahan M. Dawlaty; Neil E. Jenkins; John A. Marohn

doi:10.1063/1.1762700

Force-gradient detected nuclear magnetic resonance

Sean R. Garner, Seppe Kuehn, Jahan M. Dawlaty, Neil E. Jenkins, John A. Marohn

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

Abstract

The nuclear magnetic resonance (NMR) was detected in GaAs by selecting inverting ⁷¹Ga spins to create a local force gradients which shifts the mechanical resonance frequency of a nearby magnetic tipped microcantilever. A magnetic moment sensitivity of 7.5×10 ^-21 J/T which was equal to the Curie law magnetization from 7.1×10 ⁸ ⁷¹Ga spins, was demonstrated by employing a low spring constant cantilever at 4.4 K and 7 T. It was observed that the magnetic moment sensitivity increases by decreasing the magnet diameter and tip sample separation. The results show that their is a need to spin lock sample magnetization during detection.

Original language	English (US)
Pages (from-to)	5091-5093
Number of pages	3
Journal	Applied Physics Letters
Volume	84
Issue number	25
DOIs	https://doi.org/10.1063/1.1762700
State	Published - Jun 21 2004
Externally published	Yes

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Physics and Astronomy (miscellaneous)

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10.1063/1.1762700

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title = "Force-gradient detected nuclear magnetic resonance",

abstract = "The nuclear magnetic resonance (NMR) was detected in GaAs by selecting inverting 71Ga spins to create a local force gradients which shifts the mechanical resonance frequency of a nearby magnetic tipped microcantilever. A magnetic moment sensitivity of 7.5×10 -21 J/T which was equal to the Curie law magnetization from 7.1×10 8 71Ga spins, was demonstrated by employing a low spring constant cantilever at 4.4 K and 7 T. It was observed that the magnetic moment sensitivity increases by decreasing the magnet diameter and tip sample separation. The results show that their is a need to spin lock sample magnetization during detection.",

author = "Garner, {Sean R.} and Seppe Kuehn and Dawlaty, {Jahan M.} and Jenkins, {Neil E.} and Marohn, {John A.}",

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language = "English (US)",

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T1 - Force-gradient detected nuclear magnetic resonance

AU - Garner, Sean R.

AU - Kuehn, Seppe

AU - Dawlaty, Jahan M.

AU - Jenkins, Neil E.

AU - Marohn, John A.

PY - 2004/6/21

Y1 - 2004/6/21

N2 - The nuclear magnetic resonance (NMR) was detected in GaAs by selecting inverting 71Ga spins to create a local force gradients which shifts the mechanical resonance frequency of a nearby magnetic tipped microcantilever. A magnetic moment sensitivity of 7.5×10 -21 J/T which was equal to the Curie law magnetization from 7.1×10 8 71Ga spins, was demonstrated by employing a low spring constant cantilever at 4.4 K and 7 T. It was observed that the magnetic moment sensitivity increases by decreasing the magnet diameter and tip sample separation. The results show that their is a need to spin lock sample magnetization during detection.

AB - The nuclear magnetic resonance (NMR) was detected in GaAs by selecting inverting 71Ga spins to create a local force gradients which shifts the mechanical resonance frequency of a nearby magnetic tipped microcantilever. A magnetic moment sensitivity of 7.5×10 -21 J/T which was equal to the Curie law magnetization from 7.1×10 8 71Ga spins, was demonstrated by employing a low spring constant cantilever at 4.4 K and 7 T. It was observed that the magnetic moment sensitivity increases by decreasing the magnet diameter and tip sample separation. The results show that their is a need to spin lock sample magnetization during detection.

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Force-gradient detected nuclear magnetic resonance

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