1- and 10-V series array Josephson voltage standards in Nb/Al2O3/Nb technology

Pöpel, R.; Niemeyer, J.; Fromknecht, R.; Meier, Wolfgang; Grimm, L.

doi:10.1063/1.346224

Cited by 63 publications

(17 citation statements)

References 19 publications

(3 reference statements)

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“…On the other hand, however, a great number of junctions are quite necessary for practical applications. For example, a few thousand or a few tens of thousand junctions in series to each other are required in quantum voltage standard to get zero-crossing Shapiro steps at sufficiently high voltages for 1 V or 10 V standard calibrations 5,6 . With Nb-based junctions both two-dimensional (2D) and three-dimensional (3D) arrays have been reported using a stacked-junction fabrication technique 7,8 , remarkably increasing the package density.…”

mentioning

confidence: 99%

Three-dimensional arrays of BiSrCaCuO-2212 intrinsic Josephson junctions and zero-crossing Shapiro steps at 760 GHz

Wang

Wu²,

Chen

et al. 2002

Applied Physics Letters

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mentioning

confidence: 99%

Three-dimensional arrays of BiSrCaCuO-2212 intrinsic Josephson junctions and zero-crossing Shapiro steps at 760 GHz

Wang

Wu²,

Chen

et al. 2002

Applied Physics Letters

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“…Despite being beyond the scope of the present work, this remains an interesting issue that would require further investigation. Figure 4(a) shows the emitted radiation power spectrum for a chain of N = 10 3 Nb/AlOx/Nb rectangular junctions 14,17,30,31 driven by a 100 MHz oscillating magnetic field. As we can see, the device is able to provide a power of about 10 pW at 50 GHz (corresponding to the 500-th har- monic of the driving frequency).…”

Section: Numerical Resultsmentioning

confidence: 99%

Radiation comb generation with extended Josephson junctions

Solinas

Bosisio

Giazotto³

2015

Journal of Applied Physics

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We propose the implementation of a Josephson radiation comb generator (JRCG) based on an extended Josephson junction subject to a time dependent magnetic field. The junction critical current shows known diffraction patterns and determines the position of the critical nodes when it vanishes. When the magnetic flux passes through one of such critical nodes, the superconducting phase must undergo a π-jump to minimize the Josephson energy. Correspondingly a voltage pulse is generated at the extremes of the junction. Under periodic driving this allows us to produce a comb-like voltage pulses sequence. In the frequency domain it is possible to generate up to hundreds of harmonics of the fundamental driving frequency, thus mimicking the frequency comb used in optics and metrology. We discuss several implementations through a rectangular, cylindrical and annular junction geometries, allowing us to generate different radiation spectra and to produce an output power up to 10 pW at 50 GHz for a driving frequency of 100 MHz.

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“…The coupling of the cells could act like weak-linkjunctions in superconductors that can be separated by a very small distance, e.g. in [29]. Those configurations have been extensively investigated in the past [30].…”

Section: Superconducting-like Behavior?mentioning

confidence: 99%

Are conduits superconductor-like and supported by tetrahedra structure of hyaluronic matrix in living systems? New perspectives

Fromknecht

Gonçalves²,

Greten³

et al. 2013

Journal of Complementary and Integrative Medicine

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All biological-medical treatments need a ground regulation in the intermeshed control loop system in animate matter. The focus of our contribution is to suggest a possible mechanism in this interconnected system that will work in order to supply/assist a higher ordered servo loop. Bonghan ducts indicate similarities to so-called meridians or conduits that are the central part in Chinese Medicine for the energy Qi. It is assumed that the nervous system demands a highly redundant and rapid communication system (RCS) probably established via the extracellular matrix (ECM) and triggered by a threshold value for the entire body. Metabolic processes could work in the picosecond's range while the nervous system is on the time scale at least one order of magnitude lower; probably most of them in the millisecond range. Long-range coherent electromagnetic phenomena and recent experiments indicate a structured superconducting-like system with the Josephson-effect behavior in biological systems. In the ECM are the components proteoglycans and glycosaminoglycans (PG/GAGs) and among them the ubiquitarian hyaluronic acid plays probably an important role and can behave as liquid crystals while the charge transport is performed via proton "jumping" in the proton-chains. Therefore, the water molecules have to be confident on a nanometer scale, lowering their energy states, and set up a phase transition with a rapid jumping of the protons through the water-carbon-chains. These partial chains could probably be modeled by tiny pyramids of the atoms. We propose that in order to set up those long-range coherent effects, a vortex is created. By doing Qi Gong, an energetic vortex through the body is established and the entire body can be modeled by two-base plane-faced pyramids acting as a tunable cavity resonator obeying electrodynamics laws. Therefore, the phenomenon's of pyramids should be considered in animate and inanimate matter in order to achieve long-range coherent effects, which by now controversially discussed and to go new ways to come over the clutter.

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1- and 10-V series array Josephson voltage standards in Nb/Al2O3/Nb technology

Cited by 63 publications

References 19 publications

Three-dimensional arrays of BiSrCaCuO-2212 intrinsic Josephson junctions and zero-crossing Shapiro steps at 760 GHz

Three-dimensional arrays of BiSrCaCuO-2212 intrinsic Josephson junctions and zero-crossing Shapiro steps at 760 GHz

Radiation comb generation with extended Josephson junctions

Are conduits superconductor-like and supported by tetrahedra structure of hyaluronic matrix in living systems? New perspectives

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