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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2007

Josephson junctions with second harmonic in the current-phase relation: Properties of Phi-junctions

Résumé

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.

Dates et versions

hal-00401243 , version 1 (02-07-2009)

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Citer

E. Goldobin, D. Koelle, R. Kleiner, Alexandre I. Buzdin. Josephson junctions with second harmonic in the current-phase relation: Properties of Phi-junctions. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2007, 76 (22), pp.224523 (13). ⟨10.1103/PhysRevB.76.224523⟩. ⟨hal-00401243⟩

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