DC SQUIDs fabricated with YBaCuO thin films

Wang, Shuguang; Cui, G.J.; Dai, Yuchao; Jiang, Hai; Zeng, Xianghui; Li, J.; Bao, Zhenan; Li, C.; Yin, Dali; Shao, Kai; Cao, Chunhong

doi:10.1109/20.92430

Cited by 6 publications

(1 citation statement)

References 6 publications

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“…Obviously, these weak links are formed in the oxygen-depleted regions, for example at the grain boundaries. Such HTSC ceramics are characterized by low critical current density Jc < 500A/cruz-The investigation of critical current temperature dependence suggests the presence of S-N-S type weak link (Wang et al 1989). This is also evidenced by the low values of normal resistance R N of the weak link (Akimov et at 1989;Aminov et al 1989).…”

Section: Choice Of Htsc Ceramicsmentioning

confidence: 99%

Design and characteristics of HTSC SQUID magnetometer with a sensitivity of 10−13 THz−1/2

Kartsovnik¹,

Pavlov²,

Pavlyuk³

et al. 1991

Bull. Mater. Sci.

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The results are presented of the experimental studies on forming weak links in yttrium ceramics by scribing and high-voltage discharge. The energy resolution of SQUIDs and the magnetic field sensitivity of magnetometers produced according to these methods were 6 x 10-zSJ/Hz and 10-/SJ/Hz, 5 × 10-13T/Hz 1/2 and 2"5 × 10-t3T/Hz l/z, respectively. Different designs of HTSC interferometers sensitive to the external magnetic field variation are described. The factors affecting the sensitivity of r.f. HTSC SQUID-magnetometers are considered.

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Section: Choice Of Htsc Ceramicsmentioning

confidence: 99%

Design and characteristics of HTSC SQUID magnetometer with a sensitivity of 10−13 THz−1/2

Kartsovnik¹,

Pavlov²,

Pavlyuk³

et al. 1991

Bull. Mater. Sci.

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High-T c Epitaxial Junctions and DC-SQUIDs

Wang

Zeng

Dai

et al. 1992

Superconducting Devices and Their Applications

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Josephson effect in high-T c superconductivity

Kupriyanov

Likharev

1991

Bull. Mater. Sci.

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In this report we present the most important results of our recent analysis (Kupriyanov and Likharev 1990) of the Josephson effect in both the natural (intergrain) and artificial junctions using high-Tc superconductors (HTS). A comparison of the experimental data with the BCS-based theories of the Josephson effect in various tunnel-junction-type and weak-link-type structures has been carried out. The main conclusion is that the data presently available do not enable one to either confirm or reject the theories, and thus to reveal possible deviations of the real microscopic mechanism of the high-Tc superconductivity from the BCS mechanism. We suggest several experiments which would be more fruitful for this purpose, as well as for finding ways of reproducible fabrication of practically useful Josephson junctions.

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DC SQUIDs fabricated with YBaCuO thin films

Cited by 6 publications

References 6 publications

Design and characteristics of HTSC SQUID magnetometer with a sensitivity of 10−13 THz−1/2

Design and characteristics of HTSC SQUID magnetometer with a sensitivity of 10−13 THz−1/2

High-T c Epitaxial Junctions and DC-SQUIDs

Josephson effect in high-T c superconductivity

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