Series-array Josephson voltage standards

Kautz, Richard L.; Hamilton, C.A.; Lloyd, F. L.

doi:10.1109/tmag.1987.1064949

Cited by 81 publications

(25 citation statements)

References 17 publications

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“…12 The phase locking or the synchronization of the voltage observed in conventional multijunction systems has been analyzed on the basis of those equivalent circuits. [12][13][14] However, the microscopic origin of the impedance which induces the coupling among the junctions is not clearly specified in those phenomenological models. In this paper we, therefore, first examine the dynamics of the phase differences in a 1D array of Josephson junctions and clarify the origin of the coupling between the interlayer phase differences in intrinsic layered superconductors.…”

Section: Introductionmentioning

confidence: 99%

I-Vcharacteristics of Josephson-coupled layered superconductors with longitudinal plasma excitations

1996

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Coupled equations for the interlayer phase differences in Josephson-coupled layered superconductors are derived in both current-biased and voltage-biased cases. These equations have a solution corresponding to the longitudinal Josephson plasma propagating along the c axis. Using the numerical solutions for the systems composed of 100 junctions, we calculate the I-V characteristics of the Josephson-coupled layered superconductors in the absence of an external magnetic field. Various types of I-V characteristics reflecting the dynamics of the phase differences are obtained. ͓S0163-1829͑96͒06846-4͔

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Section: Introductionmentioning

confidence: 99%

I-Vcharacteristics of Josephson-coupled layered superconductors with longitudinal plasma excitations

1996

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“…Underdamped junctions with  c > 1 show a hysteretic current-voltage characteristic, overdamped junctions with  c  1 a non-hysteretic one as schematically shown in given in several reviews (e.g. Josephson, 1965;Kautz, 1992;Rogalla, 1998) and textbooks (e.g. Barone & Paternò, 1982;Likharev, 1986;Kadin, 1999).…”

Section: Fundamentals -The Josephson Effectsmentioning

confidence: 94%

“…The step width of the constant-voltage steps depends on the applied microwave power; in some cases, the dependence is given by a Bessel function (Kautz, 1992. A uniform power distribution is achieved by the integration of the Josephson junctions into adapted microwave transmission lines.…”

Section: Designs -A Brief Surveymentioning

confidence: 99%

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Development of Josephson voltage standards

Kohlmann¹,

Behr²

2011

Superconductivity - Theory and Applications

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“…The frequency of the applied RF signal must be higher than to observe clear Shapiro steps [8]. Although the IJJ system is much more complicated, it is inferred from analogy that the applied frequency should be higher than at least.…”

Section: B Rf Response Of Si-implanted Intrinsic Josephson Junctionsmentioning

confidence: 99%

Ion implantation effects on tunneling properties of Bi/sub 2/Sr/sub 2/Ca/sub 1/Cu/sub 2/O/sub 8+y/ intrinsic Josephson junctions

Nakajima¹,

Watanabe²,

Wang³

et al. 2003

IEEE Trans. Appl. Supercond.

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We propose a feasible method to modify the tunneling properties of Bi 2 Sr 2 CaCu 2 O 8+ (Bi-2212) intrinsic Josephson junctions(IJJ's) using silicon ion implantation. The implantation is performed on 150 nm-height mesas at an acceleration voltage of 80 keV with doses ranging from 1 10 13 to 5 10 15 ions/cm 2 . The critical current of IJJ's rapidly decreases with increasing doses, while the critical temperature hardly changes. The small amount of Si impurities affect on the interlayer coupling but not the gap of the CuO 2 bilayers. The RF response of a Si-implanted IJJ is demonstrated and reveals clear Shapiro steps as the plasma frequency decreases. Index Terms-Bi 2 Sr 2 CaCu 2 O 8+ , high-Tc superconductors, intrinsic Josephson effect, ion implantation, shapiro step, tunneling.

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Series-array Josephson voltage standards

Cited by 81 publications

References 17 publications

I-Vcharacteristics of Josephson-coupled layered superconductors with longitudinal plasma excitations

I-Vcharacteristics of Josephson-coupled layered superconductors with longitudinal plasma excitations

Development of Josephson voltage standards

Ion implantation effects on tunneling properties of Bi/sub 2/Sr/sub 2/Ca/sub 1/Cu/sub 2/O/sub 8+y/ intrinsic Josephson junctions

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