Observation of Josephson self-coupling in NbAlOxNb tunnel junctions
M. Maezawa, M. Aoyagi, H. Nakagawa, I. Kurosawa, S. Takada
DOI 10.1103/PhysRevB.50.9664 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We present the observation of Josephson self-coupling in NbAlOxNb tunnel junctions. In current-voltage characteristics, anomalous subharmonic gap structures were observed; steep current steps and peaks which were sensitive to the magnetic field appeared at the voltages of 2Δ3e and 2Δ5e. The characteristics of these structures could not be explained by multiparticle tunneling and/or multiple Andreev reflection. We conclude that the structures at 2Δ3e and 2Δ5e are due to Josephson self-coupling.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9.2 | Pressure not reported | unknown |
Similar papers
Supercurrent-phase relation of an Nb/AlOx/Al/AlOx/Nb-based Josephson junction at the superconducting transition of the Al Interlayer
similarity 0.95M. Götz et al.
Source status unknown — claims are unverified
Proximity-effect engineering in aluminum-based planar Josephson junctions with intrinsic superconductivity
similarity 0.95K.B. Polevoy et al.
Source status unknown — claims are unverified
Comparative analysis of tunneling magnetoresistance in low-Tc Nb/Al-AlOx/Nb and high-Tc Bi2−yPbySr2CaCu2O8+δ intrinsic Josephson junctions
similarity 0.95V. M. Krasnov et al.
Source status unknown — claims are unverified
Observation of Spin-Triplet Superconductivity in Co-Based Josephson Junctions
similarity 0.95Trupti S. Khaire et al.
Source status unknown — claims are unverified
Nonideal artificial phase discontinuity in long Josephson 0−κ junctions
similarity 0.95T. Gaber et al.
Source status unknown — claims are unverified
Evidence for Nonlocal Electrodynamics in Planar Josephson Junctions
similarity 0.95A. A. Boris et al.
Source status unknown — claims are unverified