1. Instituto de Física, Universidade de São Paulo, Rua do Matão 1371, São Paulo, São Paulo 05508-090, Brazil
2. School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, U.K.
3. Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, Tennessee 37996, United States
4. Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
5. Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, 69622 Villeurbanne CEDEX, France
6. Aix Marseille University, CNRS, ICR, Marseille, France