2010
DOI: 10.1088/1742-6596/234/4/042010
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NANO-SQUIDs based on niobium Dayem bridges for nanoscale applications

Abstract: Abstract. We report on the design, the fabrication and the performance of an integrated magnetic nano-sensor based on niobium dc-SQUID (Superconducting QUantum Interference Device) for nanoscale applications is presented. The nano-sensors are based on nanometric niobium constrictions (Dayem bridges) inserted in a square loop having a side length of 200 nm. Measurements of voltage-flux characteristic, flux to voltage transfer factor and noise performances are reported. In small signal mode, the sensors have sho… Show more

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Cited by 3 publications
(2 citation statements)
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“…We tried to see resistance oscillations with higher harmonic terms even in the simple ring device by tuning the measurement current and also by using several different ring devices, but such higher harmonic oscillations have never been observed. In addition, to the best of our knowledge, higher harmonic components have not been reported in previous superconducting Nb ring devices [25][26][27][28][29][30] Harmonic oscillations with a frequency of (ℎ 4𝑒 ⁄ ) −1 were reported in Al-based ring-shaped devices 8,31,32) where the lateral size is comparable to 𝜉 of Al. According to Refs.…”
mentioning
confidence: 73%
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“…We tried to see resistance oscillations with higher harmonic terms even in the simple ring device by tuning the measurement current and also by using several different ring devices, but such higher harmonic oscillations have never been observed. In addition, to the best of our knowledge, higher harmonic components have not been reported in previous superconducting Nb ring devices [25][26][27][28][29][30] Harmonic oscillations with a frequency of (ℎ 4𝑒 ⁄ ) −1 were reported in Al-based ring-shaped devices 8,31,32) where the lateral size is comparable to 𝜉 of Al. According to Refs.…”
mentioning
confidence: 73%
“…In addition, to the best of our knowledge, higher harmonic components have not been reported in previous superconducting Nb ring devices. [25][26][27][28][29][30] Harmonic oscillations with a frequency of h e 4 1 ( ) -/ were reported in Al-based ring-shaped devices 8,31,32) where the lateral size is comparable to x of Al. According to Refs.…”
Section: F = /mentioning
confidence: 99%