Nano-sized SQUID-on-tip for scanning probe microscopy

A. Finkler; D. Vasyukov; Y. Segev; L. Neeman; Y. Anahory; Y. Myasoedov; M. L. Rappaport; M. E. Huber; J. Martin; A. Yacoby; E. Zeldov

doi:10.1088/1742-6596/400/5/052004

Nano-sized SQUID-on-tip for scanning probe microscopy

A. Finkler^*, D. Vasyukov, Y. Segev, L. Neeman, Y. Anahory, Y. Myasoedov, M. L. Rappaport, M. E. Huber, J. Martin, A. Yacoby, E. Zeldov

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

11 Scopus citations

Abstract

We present a SQUID of novel design, which is fabricated on the tip of a pulled quartz tube in a simple 3-step evaporation process without need for any additional processing, patterning, or lithography. The resulting devices have SQUID loops with typical diameters in the range 75-300 nm. They operate in magnetic fields up to 0.6 T and have flux sensitivity of 1.8 μΦ₀/Hz^1/2 and magnetic field sensitivity of 10 ^-7 T/Hz^1/2, which corresponds to a spin sensitivity of 65 μ_B/Hz^1/2 for aluminum SQUIDs. The shape of the tip and the small area of the SQUID loop, together with its high sensitivity, make our device an excellent tool for scanning SQUID microscopy: With the SQUID-on-tip glued to a tine of a quartz tuning fork, we have succeeded in obtaining magnetic images of a patterned niobium film and of vortices in a superconducting film in a magnetic field.

Original language	American English
Article number	052004
Journal	Journal of Physics: Conference Series
Volume	400
Issue number	PART 4
DOIs	https://doi.org/10.1088/1742-6596/400/5/052004
State	Published - 2012
Externally published	Yes
Event	26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China Duration: 10 Aug 2011 → 17 Aug 2011

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10.1088/1742-6596/400/5/052004

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title = "Nano-sized SQUID-on-tip for scanning probe microscopy",

abstract = "We present a SQUID of novel design, which is fabricated on the tip of a pulled quartz tube in a simple 3-step evaporation process without need for any additional processing, patterning, or lithography. The resulting devices have SQUID loops with typical diameters in the range 75-300 nm. They operate in magnetic fields up to 0.6 T and have flux sensitivity of 1.8 μΦ0/Hz1/2 and magnetic field sensitivity of 10 -7 T/Hz1/2, which corresponds to a spin sensitivity of 65 μB/Hz1/2 for aluminum SQUIDs. The shape of the tip and the small area of the SQUID loop, together with its high sensitivity, make our device an excellent tool for scanning SQUID microscopy: With the SQUID-on-tip glued to a tine of a quartz tuning fork, we have succeeded in obtaining magnetic images of a patterned niobium film and of vortices in a superconducting film in a magnetic field.",

author = "A. Finkler and D. Vasyukov and Y. Segev and L. Neeman and Y. Anahory and Y. Myasoedov and Rappaport, {M. L.} and Huber, {M. E.} and J. Martin and A. Yacoby and E. Zeldov",

year = "2012",

doi = "10.1088/1742-6596/400/5/052004",

language = "American English",

volume = "400",

journal = "Journal of Physics: Conference Series",

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number = "PART 4",

note = "26th International Conference on Low Temperature Physics, LT 2011 ; Conference date: 10-08-2011 Through 17-08-2011",

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T1 - Nano-sized SQUID-on-tip for scanning probe microscopy

AU - Finkler, A.

AU - Vasyukov, D.

AU - Segev, Y.

AU - Neeman, L.

AU - Anahory, Y.

AU - Myasoedov, Y.

AU - Rappaport, M. L.

AU - Huber, M. E.

AU - Martin, J.

AU - Yacoby, A.

AU - Zeldov, E.

PY - 2012

Y1 - 2012

N2 - We present a SQUID of novel design, which is fabricated on the tip of a pulled quartz tube in a simple 3-step evaporation process without need for any additional processing, patterning, or lithography. The resulting devices have SQUID loops with typical diameters in the range 75-300 nm. They operate in magnetic fields up to 0.6 T and have flux sensitivity of 1.8 μΦ0/Hz1/2 and magnetic field sensitivity of 10 -7 T/Hz1/2, which corresponds to a spin sensitivity of 65 μB/Hz1/2 for aluminum SQUIDs. The shape of the tip and the small area of the SQUID loop, together with its high sensitivity, make our device an excellent tool for scanning SQUID microscopy: With the SQUID-on-tip glued to a tine of a quartz tuning fork, we have succeeded in obtaining magnetic images of a patterned niobium film and of vortices in a superconducting film in a magnetic field.

AB - We present a SQUID of novel design, which is fabricated on the tip of a pulled quartz tube in a simple 3-step evaporation process without need for any additional processing, patterning, or lithography. The resulting devices have SQUID loops with typical diameters in the range 75-300 nm. They operate in magnetic fields up to 0.6 T and have flux sensitivity of 1.8 μΦ0/Hz1/2 and magnetic field sensitivity of 10 -7 T/Hz1/2, which corresponds to a spin sensitivity of 65 μB/Hz1/2 for aluminum SQUIDs. The shape of the tip and the small area of the SQUID loop, together with its high sensitivity, make our device an excellent tool for scanning SQUID microscopy: With the SQUID-on-tip glued to a tine of a quartz tuning fork, we have succeeded in obtaining magnetic images of a patterned niobium film and of vortices in a superconducting film in a magnetic field.

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U2 - 10.1088/1742-6596/400/5/052004

DO - 10.1088/1742-6596/400/5/052004

M3 - Conference article

AN - SCOPUS:84873654994

SN - 1742-6588

VL - 400

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - PART 4

M1 - 052004

T2 - 26th International Conference on Low Temperature Physics, LT 2011

Y2 - 10 August 2011 through 17 August 2011

ER -

Nano-sized SQUID-on-tip for scanning probe microscopy

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