Transition from a Mixed to a Pure d-Wave Symmetry in Superconducting Optimally Doped YBa2Cu3O7−x Thin Films Under Applied Fields
G. Elhalel, R. Beck, G. Leibovitch, G. Deutscher
DOI 10.1103/PhysRevLett.98.137002 · Physical Review Letters
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Abstract
We have probed the Landau levels of nodal quasiparticles by tunneling along a nodal direction of (110) oriented YBa2Cu3O7−x thin films with a magnetic field applied perpendicular to the CuO2 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 d-wave symmetry.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 84 | Pressure not reported | zero_resistance |
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 89 | Pressure not reported | zero_resistance |
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