Three-junction SQUID-on-tip with tunable in-plane and out-of-plane magnetic field sensitivity

Yonathan Anahory; Jonathan Reiner; Lior Embon; Dorri Halbertal; Anton Yakovenko; Yuri Myasoedov; Michael L. Rappaport; Martin E. Huber; Eli Zeldov

doi:10.1021/nl503022q

Three-junction SQUID-on-tip with tunable in-plane and out-of-plane magnetic field sensitivity

Yonathan Anahory^*, Jonathan Reiner, Lior Embon, Dorri Halbertal, Anton Yakovenko, Yuri Myasoedov, Michael L. Rappaport, Martin E. Huber, Eli Zeldov

^*Corresponding author for this work

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

42 Scopus citations

Abstract

Nanoscale superconducting quantum interference devices (SQUIDs) demonstrate record sensitivities to small magnetic moments but are typically sensitive only to the field component that is normal to the plane of the SQUID and out-of-plane with respect to the scanned surface. We report on a nanoscale three-junction Pb SQUID, which is fabricated on the apex of a sharp tip. Because of its three-dimensional structure, it exhibits a unique tunable sensitivity to both in-plane and out-of-plane fields. We analyze the two-dimensional interference pattern from both numerical and experimental points of view. This device is integrated into a scanning microscope, and its ability to independently measure the different components of the magnetic field with outstanding spin sensitivity better than 5 μ_B/Hz^1/2 is demonstrated. This highlights its potential as a local probe of nanoscale magnetic structures.

Original language	English
Pages (from-to)	6481-6487
Number of pages	7
Journal	Nano Letters
Volume	14
Issue number	11
DOIs	https://doi.org/10.1021/nl503022q
State	Published - 12 Nov 2014
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2014 American Chemical Society.

Keywords

Superconducting quantum interference device
magnetic imaging
scanning probe microscopy
superconductivity

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10.1021/nl503022q

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title = "Three-junction SQUID-on-tip with tunable in-plane and out-of-plane magnetic field sensitivity",

abstract = "Nanoscale superconducting quantum interference devices (SQUIDs) demonstrate record sensitivities to small magnetic moments but are typically sensitive only to the field component that is normal to the plane of the SQUID and out-of-plane with respect to the scanned surface. We report on a nanoscale three-junction Pb SQUID, which is fabricated on the apex of a sharp tip. Because of its three-dimensional structure, it exhibits a unique tunable sensitivity to both in-plane and out-of-plane fields. We analyze the two-dimensional interference pattern from both numerical and experimental points of view. This device is integrated into a scanning microscope, and its ability to independently measure the different components of the magnetic field with outstanding spin sensitivity better than 5 μB/Hz1/2 is demonstrated. This highlights its potential as a local probe of nanoscale magnetic structures.",

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year = "2014",

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doi = "10.1021/nl503022q",

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AU - Anahory, Yonathan

AU - Reiner, Jonathan

AU - Embon, Lior

AU - Halbertal, Dorri

AU - Yakovenko, Anton

AU - Myasoedov, Yuri

AU - Rappaport, Michael L.

AU - Huber, Martin E.

AU - Zeldov, Eli

PY - 2014/11/12

Y1 - 2014/11/12

N2 - Nanoscale superconducting quantum interference devices (SQUIDs) demonstrate record sensitivities to small magnetic moments but are typically sensitive only to the field component that is normal to the plane of the SQUID and out-of-plane with respect to the scanned surface. We report on a nanoscale three-junction Pb SQUID, which is fabricated on the apex of a sharp tip. Because of its three-dimensional structure, it exhibits a unique tunable sensitivity to both in-plane and out-of-plane fields. We analyze the two-dimensional interference pattern from both numerical and experimental points of view. This device is integrated into a scanning microscope, and its ability to independently measure the different components of the magnetic field with outstanding spin sensitivity better than 5 μB/Hz1/2 is demonstrated. This highlights its potential as a local probe of nanoscale magnetic structures.

AB - Nanoscale superconducting quantum interference devices (SQUIDs) demonstrate record sensitivities to small magnetic moments but are typically sensitive only to the field component that is normal to the plane of the SQUID and out-of-plane with respect to the scanned surface. We report on a nanoscale three-junction Pb SQUID, which is fabricated on the apex of a sharp tip. Because of its three-dimensional structure, it exhibits a unique tunable sensitivity to both in-plane and out-of-plane fields. We analyze the two-dimensional interference pattern from both numerical and experimental points of view. This device is integrated into a scanning microscope, and its ability to independently measure the different components of the magnetic field with outstanding spin sensitivity better than 5 μB/Hz1/2 is demonstrated. This highlights its potential as a local probe of nanoscale magnetic structures.

KW - Superconducting quantum interference device

KW - magnetic imaging

KW - scanning probe microscopy

KW - superconductivity

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JO - Nano Letters

JF - Nano Letters

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ER -

Three-junction SQUID-on-tip with tunable in-plane and out-of-plane magnetic field sensitivity

Abstract

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Keywords

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