1. Physics
Department, University of Rome “Tor Vergata”, Via
della Ricerca Scientifica 1, I-00133 Roma, Italy
2. Istituto di Struttura della
Materia, CNR, Via Fosso del Cavaliere
100, 00133 Roma, Italy
3. Institute of Physical and Theoretical Chemistry, University of Bonn, Wegelerstraße 12, D-53115 Bonn, Germany
4. Physics Department and
CNISM, University of Rome “Tor Vergata”, Via della Ricerca Scientifica 1, I-00133 Roma, Italy
5. Department of Chemistry and INSTM Research Unit, University of Pavia, Viale Taramelli, 10, 27100 Pavia, Italy