Josephson junctions with nonsinusoidal current-phase relations based on heterostructures with a ferromagnetic spacer and their applicationsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:A detailed review of theories describing the current-phase relations in Josephson junctions based on heterostructures with ferromagnetic layers is presented. The particular attention has been focused on the possibilities of making the so-called I center dot-junctions in which the ground state in the absence of the current is realized when the Josephson phase I center dot is nonzero. The recently popular speculations concerning the possibility of applying the Josephson pi- and I center dot-junctions, which are made on the basis of heterostructures with ferromagnetic layers, to the formation of quantum bits (qubits) have been illustrated. An attempt to formulate the requirements for the characteristics of the Josephson heterostructures based on the first principles of the quantum-mechanical description of superconducting interferometers with a low inductance has been made.