Magnetic field sensing using a driven double quantum dot

G. Giavaras; J. Wabnig; B. W. Lovett; J. H. Jefferson; G. A. D. Briggs

doi:10.1016/j.physe.2009.11.138

Magnetic field sensing using a driven double quantum dot

G. Giavaras, J. Wabnig, B. W. Lovett, J. H. Jefferson, G. A. D. Briggs

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Abstract

A microwave-driven double dot system is investigated as a detector for probing a magnetic field gradient. The two dots are connected to metallic leads and a source-drain current flows under microwave irradiation. The induced current as a function of the external magnetic field exhibits resonance effects that depend directly on the local field gradient and any difference in the g-factors between the dots. The properties of the dot detector with respect to temperature, interdot hopping and the magnitude of the field gradient are examined. We demonstrate that the main factor limiting sensitivity is spin relaxation and discuss the issues in applying the method to single spin detection. (C) 2009 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	895-898
Number of pages	4
Journal	Physica A: Statistical Mechanics and its Applications
Volume	42
Issue number	4
DOIs	https://doi.org/10.1016/j.physe.2009.11.138
Publication status	Published - Feb 2010

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10.1016/j.physe.2009.11.138

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title = "Magnetic field sensing using a driven double quantum dot",

abstract = "A microwave-driven double dot system is investigated as a detector for probing a magnetic field gradient. The two dots are connected to metallic leads and a source-drain current flows under microwave irradiation. The induced current as a function of the external magnetic field exhibits resonance effects that depend directly on the local field gradient and any difference in the g-factors between the dots. The properties of the dot detector with respect to temperature, interdot hopping and the magnitude of the field gradient are examined. We demonstrate that the main factor limiting sensitivity is spin relaxation and discuss the issues in applying the method to single spin detection. (C) 2009 Elsevier B.V. All rights reserved.",

author = "G. Giavaras and J. Wabnig and Lovett, {B. W.} and Jefferson, {J. H.} and Briggs, {G. A. D.}",

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AU - Wabnig, J.

AU - Lovett, B. W.

AU - Jefferson, J. H.

AU - Briggs, G. A. D.

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N2 - A microwave-driven double dot system is investigated as a detector for probing a magnetic field gradient. The two dots are connected to metallic leads and a source-drain current flows under microwave irradiation. The induced current as a function of the external magnetic field exhibits resonance effects that depend directly on the local field gradient and any difference in the g-factors between the dots. The properties of the dot detector with respect to temperature, interdot hopping and the magnitude of the field gradient are examined. We demonstrate that the main factor limiting sensitivity is spin relaxation and discuss the issues in applying the method to single spin detection. (C) 2009 Elsevier B.V. All rights reserved.

AB - A microwave-driven double dot system is investigated as a detector for probing a magnetic field gradient. The two dots are connected to metallic leads and a source-drain current flows under microwave irradiation. The induced current as a function of the external magnetic field exhibits resonance effects that depend directly on the local field gradient and any difference in the g-factors between the dots. The properties of the dot detector with respect to temperature, interdot hopping and the magnitude of the field gradient are examined. We demonstrate that the main factor limiting sensitivity is spin relaxation and discuss the issues in applying the method to single spin detection. (C) 2009 Elsevier B.V. All rights reserved.

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DO - 10.1016/j.physe.2009.11.138

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JO - Physica A: Statistical Mechanics and its Applications

JF - Physica A: Statistical Mechanics and its Applications

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ER -

Magnetic field sensing using a driven double quantum dot

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