PRL 96, 180604 ( 2006 ) PH YSICAL REVIEW LET TE RS week ending 12 MAY 2006 Zurek-Kibble Mechanism for the Spontaneous Vortex Formation in Nb-Al=Alox =Nb Josephson Tunnel Junctions: New Theory and Experiment R. Monaco,1,* J. Mygind,2, M. Aaroe,2 R. J. Rivers,3, and V. P. Koshelets 1 4,x 4 ґ ґ Istituto di Cibernetica del C.N.R., 80078 ... As a result, we assume ct cnn near the transition temperature where cnn is the speed of light in a microstrip line made of normal metals. ... Phys. Rev. Lett. ...