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Titolo:
MODULATION VOLTAGE AND FLUX NOISE IN HIGH-T-C GRAIN-BOUNDARY JUNCTIONSUPERCONDUCTING QUANTUM INTERFERENCE DEVICES
Autore:
SUZUKI D; KURIKI S; MATSUDA M;
Indirizzi:
HOKKAIDO UNIV,ELECTR SCI RES INST,N12 W6 SAPPORO HOKKAIDO 060 JAPAN MURORAN INST TECHNOL MURORAN HOKKAIDO 050 JAPAN
Titolo Testata:
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
fascicolo: 3, volume: 34, anno: 1995,
pagine: 1510 - 1514
SICI:
0021-4922(1995)34:3<1510:MVAFNI>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
DC SQUID; 1/F NOISE; MAGNETOMETER; LAYERS;
Keywords:
HIGH T-C SQUIDS; MODULATION VOLTAGE; THERMAL NOISE; SUPERCONDUCTIVE; YBCO;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
D. Suzuki et al., "MODULATION VOLTAGE AND FLUX NOISE IN HIGH-T-C GRAIN-BOUNDARY JUNCTIONSUPERCONDUCTING QUANTUM INTERFERENCE DEVICES", JPN J A P 1, 34(3), 1995, pp. 1510-1514

Abstract

We have fabricated YBa2Cu3O7-delta bicrystal grain-boundary-junction superconducting quantum interference devices (SQUIDs) having various inductance values, and studied the characteristics of the flux-modulated voltage. Generally, the modulation voltage of high-T-c SQUIDs is lower than the value expected from the IcR(n)product and the inductance. From the comparison of experimental and theoretical values, it has been found that thermal noise rounding of the I-V characteristic plays a major role in reducing the modulation voltage in the range of the noise parameter of gamma=I-c Phi(0)/pi k(B)T<20. On the other hand, noise Aux in the SQUID loop generated by thermal noise currents contributes to reducing the modulation voltage in the range of gamma>20. We have also studied the relationship between the normal resistance and the modulation voltage of the grain-boundary-junction SQUIDs.

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Documento generato il 04/04/20 alle ore 12:01:23