Engineered HTS microbridges

Simon, Robert R.; Bulman, J.B.; Burch, J.F.; Coons, S.B.; Daly, K.P.; Dozier, W. D.; Hu, R.; Lee, A.E.; Luine, J.A.; Platt, C. E.; Schwarzbek, S.; Wire, M.S.; Zani, Maurizio

doi:10.1109/20.133894

Cited by 61 publications

(15 citation statements)

References 17 publications

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“…Simon et al [106] deposited a YBCO film across a thin aluminum strip which "poisons" the superconductor locally. thereby reducing its transition temperature [ Fig.…”

Section: Josephson Junctionsmentioning

confidence: 99%

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Squid Fundamentals

Clarke

1996

SQUID Sensors: Fundamentals, Fabrication and Applications

110

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“…Simon et al [106] deposited a YBCO film across a thin aluminum strip which "poisons" the superconductor locally. thereby reducing its transition temperature [ Fig.…”

Section: Josephson Junctionsmentioning

confidence: 99%

“…Several techniques have been devised to induce the growth of a grain boundary at a specific location. Simon et al [106] deposited a film across a step etched in a substrate [ Fig. 3l(b)].…”

Section: Josephson Junctionsmentioning

confidence: 99%

Squid Fundamentals

Clarke

1996

SQUID Sensors: Fundamentals, Fabrication and Applications

110

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“…Today, various types of high-T c Josephson junctions are routinely fabricated, the most important ones being bicrystal-, 1 ramp type-, 2 step edge-, 3 and ion-, 4 and electron-beam written junctions. 5 Desirable for many applications is the controlled adjustment of the junctions' transport properties, such as the critical current I c , the normal state resistance R n , or the capacitance.…”

mentioning

confidence: 99%

Tailoring of high-Tc Josephson junctions by doping their electrodes

Schneider

Schulz

Goetz

et al. 1999

Applied Physics Letters

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Appropriate doping of the electrodes of high-Tc Josephson junctions provides a means to systematically adjust the junctions’ electronic properties. This is demonstrated for the exemplary case of grain boundary junctions in bicrystalline Ca-doped YBa2Cu3O7−δ films. It is found that the critical current density is strongly increased and the normal state resistivity significantly reduced in comparison with the values obtained for equivalent junctions in undoped films.

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“…A number of researches have been focused on the design and fabrication techniques in order to improve the noise performance and peak-to-peak voltage modulation depths of SQUIDs [7][8][9][10]. Even though the fabrication complexity of YBCO Josephson junctions has been simplified with bicrystal technology [11][12][13], the reliability of YBCO based SQUIDs is still the major challenge for many applications such as magneto-cardiography (MCG), susceptometry and non-destructive evaluation (NDE) [14][15][16]13].…”

Section: Introductionmentioning

confidence: 99%

Signal performance of DC-SQUIDs with respect to YBCO thin film deposition rate

Avci

Algul

Akram

et al. 2009

Sensors and Actuators A: Physical

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a b s t r a c tThe signal performances of YBa 2 Cu 3 O 7−ı (YBCO) direct current superconducting quantum interference devices (DC-SQUIDs) have been investigated as a function of the thin film structure affected by the growth process. YBCO thin films of 200 nm thicknesses were deposited by DC magnetron sputtering using different deposition rates between 1.0 nm/min and 2.0 nm/min onto 24• bicrystal SrTiO 3 (STO) substrates. The thin film samples were subsequently analyzed by XRD and AFM in order to determine their crystalline structures and surface morphologies respectively. The 67 pH directly coupled DC-SQUIDs with 4 m-wide bicrystal Josephson junctions were fabricated, and characterized with respect to their device performances. The variations in the critical current (I c ), the voltage modulation depth ( V) and the noise performance of DC-SQUIDs were reported. The SQUIDs having relatively low deposition rate of 1.0 nm/min was observed to have larger voltage modulation depth as well as higher critical current than that of the samples having larger rate of 2.0 nm/min. The better noise performances were observed as the film deposition rate decreases. The results were associated with the thin film structure and the SQUID characteristics.

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Engineered HTS microbridges

Cited by 61 publications

References 17 publications

Squid Fundamentals

Squid Fundamentals

Tailoring of high-Tc Josephson junctions by doping their electrodes

Signal performance of DC-SQUIDs with respect to YBCO thin film deposition rate

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