Temporal evolution of exchange bias in spin-valve nanowires on the nanosecond time scale M. Hayashi, L. Thomas, C. Rettner, X. Jiang and S. S. P. Parkin EPL, 78 6 (2007) 67006 Published online: 05 June 2007 DOI: 10.1209/0295-5075/78/67006