DC NanoSQUID from Nb Thin Films

• Authors: V. Štrbík , M. Pisarčík , Š. Gaži , M. Španková
• Languages of publication: EN

Abstracts

EN

We have prepared Nb thin film (thickness 80-100 nm) nanoSQUID with two symmetrically placed nanosized constrictions in superconducting loop. The nanoSQUID was prepared in two steps: at first a microsized SQUID was prepared and in the second step nanosized constrictions of the width of 120 nm in the SQUID loop were created by a focused ion beam technique. We studied the electrical and magnetic properties. From the obtained results, SQUID and constriction dimensions, the spin sensitivity was estimated to be about 50 μ_{B} Hz^{-1/2}. Further improvement of spin sensitivity is possible by lowering the SQUID and constriction dimensions.

Keywords

EN

74.78.-w; 74.70.Ad; 85.25.Dq

Discipline

• 74.78.-w: Superconducting films and low-dimensional structures
• 85.25.Dq: Superconducting quantum interference devices (SQUIDs)
• 74.70.Ad: Metals; alloys and binary compounds (including A15, MgB2, etc.)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 4
• Pages: 1054-1056

Dates

published

2017-04

Contributors

author

V. Štrbík

• Institute of Electrical Engineering, Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovakia

author

M. Pisarčík

• Institute of Electrical Engineering, Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovakia

author

Š. Gaži

• Institute of Electrical Engineering, Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovakia

author

M. Španková

• Institute of Electrical Engineering, Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovakia

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Identifiers

DOI

10.12693/APhysPolA.131.1054