Abdumalikov A, Kurin V, Helm C, De Col A, Koval Y, Ustinov A (2006)
Publication Language: English
Publication Type: Journal article, Original article
Publication year: 2006
Publisher: American Physical Society
Pages Range: 134515
Journal Issue: 74
URI: http://www.fluxongroup.physik.uni-erlangen.de/publications/2006/Abdumalikov-PRB-2006.pdf
DOI: 10.1103/PhysRevB.74.134515
We experimentally and theoretically investigate electromagnetic cavity modes in ultranarrow Al- AlOx -Al and Nb- AlOx -Nb long Josephson junctions. Experiments show that the voltage spacing between the Fiske steps on the current-voltage characteristics of sub- μm -wide and several hundred μm -long Al- AlOx -Al and Nb- AlOx -Nb Josephson junctions increases when decreasing the junction width. This effect is explained by stray magnetic fields, which become important for narrow junctions. Theoretical estimates of the Fiske step voltage based on a nonlocal wave propagation equation are in agreement with our experimental data. Using the nonlocal model, we determine the size and mass of a Josephson vortex by means of a variational approach, and relate the vortex size to the experimentally measured critical magnetic field of the junction. © 2006 The American Physical Society.
APA:
Abdumalikov, A., Kurin, V., Helm, C., De Col, A., Koval, Y., & Ustinov, A. (2006). Nonlocal electrodynamics of long ultranarrow Josephson junctions: Experiment and theory. Physical Review B, 74, 134515. https://doi.org/10.1103/PhysRevB.74.134515
MLA:
Abdumalikov, Abdufarrukh, et al. "Nonlocal electrodynamics of long ultranarrow Josephson junctions: Experiment and theory." Physical Review B 74 (2006): 134515.
BibTeX: Download