Transition from a mixed to a pure d-wave symmetry in superconducting optimally doped YBa$_2$Cu$_3$O$_{7-x}$ thin films under applied fields

G. Elhalel; R. Beck; G. Leibovitch; G. Deutscher

doi:10.1103/physrevlett.98.137002

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Transition from a mixed to a pure d-wave symmetry in superconducting optimally doped YBa$_2$Cu$_3$O$_{7-x}$ thin films under applied fields

G. Elhalel·R. Beck·G. Leibovitch·G. Deutscher

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Abstract

We have probed the Landau levels of nodal quasi-particles by tunneling along a nodal direction of (110) oriented YBa$_2$Cu$_3$O$_{7-x}$ thin films with a magnetic field applied perpendicular to the $CuO_2$ planes, and parallel to the film's surface. In optimally doped films and at low temperature, finite energy nodal states are clearly observed in films thinner than the London penetration depth. Above a well defined temperature the order parameter reverts to a pure \emph{d}-wave symmetry.

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BibTeX RIS

G. Elhalel, R. Beck, G. Leibovitch, G. Deutscher. 2007-04-02. Transition from a mixed to a pure d-wave symmetry in superconducting optimally doped YBa$_2$Cu$_3$O$_{7-x}$ thin films under applied fields. https://doi.org/10.1103/physrevlett.98.137002

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