Josephson junctions with second harmonic in the current-phase relation: Properties of Phi-junctions
BUZDIN, Alexandre I.
Centre de physique moléculaire optique et hertzienne [CPMOH]
Institut universitaire de France [IUF]
< Réduire
Centre de physique moléculaire optique et hertzienne [CPMOH]
Institut universitaire de France [IUF]
Langue
en
Article de revue
Ce document a été publié dans
Physical Review B: Condensed Matter and Materials Physics (1998-2015). 2007, vol. 76, n° 22, p. 224523 (13)
American Physical Society
Résumé en anglais
Several recent experiments revealed a change of the sign of the first harmonic in the current-phase relation of Josephson junctions (JJ) based on novel superconductors, e.g., d-wave based or JJ with ferromagnetic barrier. ...Lire la suite >
Several recent experiments revealed a change of the sign of the first harmonic in the current-phase relation of Josephson junctions (JJ) based on novel superconductors, e.g., d-wave based or JJ with ferromagnetic barrier. In this situation the role of the second harmonic becomes dominant and it determines the scenario of a 0-pi transition. We discuss different mechanisms of the second harmonic generation and its sign. If the second harmonic is negative the 0-pi transition becomes continuous and the realization of the so-called varphi junction is possible. We study the unusual properties of such a novel JJ and analyze the possible experimental techniques for their observation.< Réduire
Origine
Importé de halUnités de recherche