arxiv: cond-mat/9811017 · v1 · submitted 1998-11-02 · ❄️ cond-mat.supr-con

Anomalous Periodicity of the Current-Phase Relationship of Grain-Boundary Josephson Junctions in High-Tc Superconductors

E. Il'ichev , V. Zakosarenko , R.P.J. IJsselsteijn , H. E. Hoenig , V. Schultze , H.-G. Meyer , M. Grajcar , R. Hlubina This is my paper

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keywords junctionsperiodicityanomalousbeencurrent-phased-wavejosephsonsuperconductors

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The current-phase relation (CPR) for asymmetric 45 degree Josephson junctions between two d-wave superconductors has been predicted to exhibit an anomalous periodicity. We have used the single-junction interferometer to investigate the CPR for this kind of junctions in YBCO thin films. Half-fluxon periodicity has been experimentally found, providing a novel source of evidence for the d-wave symmetry of the pairing state of the cuprates.

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Anomalous Periodicity of the Current-Phase Relationship of Grain-Boundary Josephson Junctions in High-Tc Superconductors

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