Observation of Tomasch oscillations and tunneling-like behavior in oxygen-deficient edge junctions
- 31 May 1999
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 74 (22) , 3392-3394
- https://doi.org/10.1063/1.123355
Abstract
Properties of oxygen-deficient edge junctions made of YBa2Cu3O6.6 as the superconductor and YBa2Cu3−xFexOy as the barrier are reported. These junctions show weak-link characteristics when the edge angle is 50°, while tunneling-like behavior is observed when the edge angle is 36°. In all junctions strong peaks in the conductivity are found, which depend on the specific junction geometry. Some series of peaks were identified as due to Tomasch oscillations in the cover electrode, which yield Δ=1.4±0.2 meV and vF′=(4.4±0.2)×107 cm/s.Keywords
This publication has 17 references indexed in Scilit:
- Observation of bound surface states in grain-boundary junctions of high-temperature superconductorsPhysical Review B, 1998
- Proximity effect in bilayer films of YBa2Cu2.7Fe0.3Oy and YBa2Cu3O7−δApplied Physics Letters, 1998
- Measurement of the Fundamental Length Scales in the Vortex State ofPhysical Review Letters, 1997
- Conductance anomalies in a normal-metal–d-wave superconductor junctionPhysical Review B, 1996
- Midgap surface states as a novel signature for --wave superconductivityPhysical Review Letters, 1994
- Origin of superconductive glassy state and extrinsic critical currents in high-oxidesPhysical Review Letters, 1987
- Tunneling and infrared measurements of the energy gap in the high-critical-temperature superconductor Y-Ba-Cu-OPhysical Review B, 1987
- Theory of Geometrical Resonances in the Tunneling Characteristics of Thick Films of SuperconductorsPhysical Review Letters, 1966
- Geometrical Resonance and Boundary Effects in Tunneling from Superconducting InPhysical Review Letters, 1966
- Geometrical Resonance in the Tunneling Characteristics of Superconducting PbPhysical Review Letters, 1965