Physics – Condensed Matter – Superconductivity
Scientific paper
2010-06-09
Phys. Rev. B 82, 024517 (2010)
Physics
Condensed Matter
Superconductivity
Scientific paper
10.1103/PhysRevB.82.024517
We study Fiske steps in small Bi2Sr2CaCu2O8+x mesa structures, containing only few stacked intrinsic Josephson junctions. Careful alignment of magnetic field prevents penetration of Abrikosov vortices and facilitates observation of a large variety of high quality geometrical resonances, including superluminal with velocities larger than the slowest velocity of electromagnetic waves. A small number of junctions limits the number of resonant modes and allows accurate identification of modes and velocities. It is shown that superluminal geometrical resonances can be excited by subluminal fluxon motion and that flux-flow itself becomes superluminal at high magnetic fields. We argue that observation of high-quality superluminal geometrical resonances is crucial for realization of the coherent flux-flow oscillator in the THz frequency range.
Katterwe Sven-Olof
Krasnov Vladimir M.
Kulakov A. B.
Motzkau Holger
Rydh Andreas
No associations
LandOfFree
Observation of superluminal geometrical resonances in Bi2Sr2CaCu2O8+x intrinsic Josephson junctions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Observation of superluminal geometrical resonances in Bi2Sr2CaCu2O8+x intrinsic Josephson junctions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observation of superluminal geometrical resonances in Bi2Sr2CaCu2O8+x intrinsic Josephson junctions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-39581