Direct evidence of lattice-relaxed charge transfer exciton strings E. Collet, M. H. Lemée-Cailleau, M. Buron-Le Cointe, H. Cailleau, S. Ravy, T. Luty, J. F. Bérar, P. Czarnecki and N. Karl Europhys. Lett., 57 1 (2002) 67-73 Published online: 01 September 2002 DOI: 10.1209/epl/i2002-00542-5