CHESCA, B., JOHN, D. and MELLOR, C., 2014. Amplification of electromagnetic waves excited by a chain of propagating magnetic vortices in YBaCuO Josephson-junction arrays. Superconducting Science and Technology 27(8):085015-085015.
Theory shows that when a soliton propagates in a discrete lattice it excites small-amplitude
linear waves in its wake. In a dc current-biased Josephson-junction (JJ) array these manifest
as electromagnetic (EM) waves excited by a (magnetic field induced) chain of propagating
magnetic vortices. When the vortex velocity and the phase velocity of one of the excited EM
waves match, phase-locking occurs. This results in the amplification of the EM radiation. We
report the first observation of phase-locking-induced amplification of EM radiation at 77K
and above in JJ arrays made of high temperature superconductors.
This is an author-created, un-copyedited version of an article published in Superconducting Science and Technology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/0953-2048/27/8/085015