Cu-Nb (Copper-Niobium)

Oscillations of the superconducting critical current in Nb-Cu-Ni-Cu-Nb junctions.

We report on experimental studies of superconductor-ferromagnet layered structures. Strong oscillations of the critical supercurrent were observed with the thickness variation of the ferromagnet. Using known microscopic parameters of Ni, we found reasonable agreement between the period of oscillations and the decay of the measured critical current, and theoretical calculations.

Josephson properties of Nb/Cu multilayers.

200mhz Nb-cu Cavities for Muon Acceleration

As a first step toward a muon collider, a neutrino factory is being actively studied. The neutrino factory calls for nearly 500 meters of 200 MHz SRF cavities to provide 7.5 GeV. The desired gradient is in the range of 15 -17 MV/m at a Q of . Nb-Cu is the technology of choice driven mainly by the cost concern. A Cornell/CERN collaboration was established to address the unique challenges imposed...

Di-μ-chlorido-μ-(dimethyl sulfide)-bis­{dichlorido[(dimethyl selenide-κSe)(dimethyl sulfide-κS)(0.65/0.35)]niobium(III)}(Nb—Nb)

The dinuclear compound, [Nb(2)Cl(6)(C(2)H(6)S)(1.7)(C(2)H(6)Se)(1.3)], features an Nb(III)=Nb(III) double bond [2.6878 (5) Å]. The mol-ecule lies on a twofold rotation axis that passes through the middle of this bond as well as through the bridging dimethyl sulfide ligand. The Nb(III) ion exists in an octa-hedral coordination environment defined by two terminal and two bridging Cl atoms, and (C...

Low-temperature characterization of Nb-Cu-Nb weak links with Ar ion-cleaned interfaces

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