Plasmon polaritons in photonic superlattices containing a left-handed material E. Reyes-Gómez, D. Mogilevtsev, S. B. Cavalcanti, C. A. A. de Carvalho and L. E. Oliveira EPL, 88 2 (2009) 24002 Published online: 09 November 2009 DOI: 10.1209/0295-5075/88/24002