منابع مشابه
Nb-Pb superconducting RF-gun
TESLA-FEL Report 2005-09 J. Sekutowicz, J. Iversen, G. Kreps, W.-D. Möller, W. Singer, X. Singer Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22603 Hamburg, Germany I. Ben-Zvi, A. Burrill, J. Smedley, T. Rao Brookhaven National Laboratory, Upton, NY 11973, USA M. Ferrario* Istituto Nazionale di Fisica Nucleare, Via E. Fermi 40, 00044 Frascati, Italy P. Kneisel Thomas Jefferson National Ac...
متن کاملOscillations 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.
متن کاملSuperconducting properties of polycrystalline Nb nanowires templated by carbon nanotubes
Continuous Nb wires, 7–15 nm in diameter, have been fabricated by sputter-coating single fluorinated carbon nanotubes. Transmission electron microscopy revealed that the wires are polycrystalline, having grain sizes of about 5 nm. The critical current of wires thicker than ;12 nm is very high (10 A/cm) and comparable to the expected depairing current. The resistance versus temperature curves me...
متن کاملCurrent-induced SQUID behavior of superconducting Nb nano-rings
The critical temperature in a superconducting ring changes periodically with the magnetic flux threading it, giving rise to the well-known Little-Parks magnetoresistance oscillations. Periodic changes of the critical current in a superconducting quantum interference device (SQUID), consisting of two Josephson junctions in a ring, lead to a different type of magnetoresistance oscillations utiliz...
متن کاملCommensurability effects in superconducting Nb films with quasiperiodic pinning arrays.
We study experimentally the critical depinning current I(c) versus applied magnetic field B in Nb thin films which contain 2D arrays of circular antidots placed on the nodes of quasiperiodic (QP) fivefold Penrose lattices. Close to the transition temperature T(c) we observe matching of the vortex lattice with the QP pinning array, confirming essential features in the I(c)(B) patterns as predict...
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ژورنال
عنوان ژورنال: Journal of the Japan Institute of Metals and Materials
سال: 1966
ISSN: 0021-4876,1880-6880
DOI: 10.2320/jinstmet1952.30.3_241