Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Katsuyuki Tsukui0
Date of Patent
January 1, 2008
0Patent Application Number
112600290
Date Filed
October 26, 2005
0Patent Primary Examiner
Patent abstract
A switching device has an S (Superconductor)-N (Normal Metal)-S superlattice to control the stream of electrons without any dielectric materials. Each layer of said Superconductor has own terminal. The superlattice spacing is selected based on “Dimensional Crossover Effect”. This device can operate at a high frequency without such energy losses as devices breaking the superconducting state. The limit of the operation frequency in the case of the Nb/Cu superlattice is expected to be in the order of 1018 Hz concerning plasmon loss energy of the normal metals (Cu; in the order of 103 eV).
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