Roughness-induced enhancement of giant magnetoresistance in epitaxial trilayersD. Olligs, D. E. Bürgler, Y. G. Wang, E. Kentzinger, U. Rücker, R. Schreiber, Th. Brückel and P. GrünbergEurophys. Lett., 59 3 (2002) 458-464DOI: https://doi.org/10.1209/epl/i2002-00217-9