1. Department of Physics, University of Modena e Reggio Emilia, via Campi 213a, 41100 Modena, Italy, INFM-CNR National Research Center “S3”, Modena, Italy, INFM-CNR National Research Center “S3” and European Theoretical Spectroscopy Facility (ETSF), via Campi 213a, 41100 Modena, Italy, Department of Physics, University of Texas at El Paso, El Paso, Texas 79968, Center for Computational Materials Science, Code 6390, Naval Research Laboratory, Washington, DC 20375-5345, and Nano-Bio Spectroscopy Group and...