1. Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
2. Laboratoire CRISMAT,
CNRS ENSICAEN, 6 bd Maréchal
Juin, Caen 14050, France
3. Department
of Physics, Osmaniye Korkut Ata University, Osmaniye 80000, Turkey
4. Physics
Department, Cukurova University, Adana 01330, Turkey