Dynamics of Semifluxons in Nb Long Josephson 0−π Junctions
E. Goldobin, A. Sterck, T. Gaber, D. Koelle, R. Kleiner
DOI 10.1103/PhysRevLett.92.057005 · Physical Review Letters
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 propose, implement, and test experimentally long Josephson 0−π junctions fabricated using conventional Nb−AlOx−Nb technology. We show that by using a pair of current injectors one can create an arbitrary discontinuity of the Josephson phase and, in particular, a π discontinuity, just as in d-wave/s-wave or in d-wave/d-wave junctions, and study fractional Josephson vortices which spontaneously appear. Moreover, using such junctions, we can investigate the dynamics of the fractional vortices—a domain which is not yet available for natural 0−π junctions due to their inherently high damping. We observe half-integer zero-field steps which appear on the current-voltage characteristics due to the hopping of semifluxons.
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. | — | Pressure not reported | unknown |
Similar papers
Nonlocal electrodynamics of long ultranarrow Josephson junctions: Experiment and theory
similarity 0.95A. A. Abdumalikov, Jr. et al.
Source status unknown — claims are unverified
Spectroscopy of the Fractional Vortex Eigenfrequency in a Long Josephson 0−κ Junction
similarity 0.95K. Buckenmaier et al.
Source status unknown — claims are unverified
Tuning of phase diffusion in small Josephson junctions by magnetic field
similarity 0.95Y. Koval et al.
Source status unknown — claims are unverified
Static and dynamic properties of annular Josephson junctions with injected current
similarity 0.95D. Perez de Lara et al.
Source status unknown — claims are unverified
Phase Transition and Critical Dynamics in Site-Diluted Josephson-Junction Arrays
similarity 0.95Young-Je Yun et al.
Source status unknown — claims are unverified
Zeeman-Effect-Induced 0−π Transitions in Ballistic Dirac Semimetal Josephson Junctions
similarity 0.95Chuan Li et al.
Source status unknown — claims are unverified