Institution: | (1) Department of Physics, Bilkent University, Bilkent, Ankara 06533, Turkey (Fax: +90-312/266-4579, E-mail: ozbay@fen.bilkent.edu.tr), TR;(2) Ames Laboratory and Microelectronics Research Center, Iowa State University, Ames, IA 50011, USA (Fax: +1-515/294-0665, E-mail: sigalas@iastate.edu), US |