| Authors: |
Zhang S; Department of Physics, Beijing Normal University, Beijing 100875, China., Qi S; Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 9, D-55099 Mainz, Germany., Klushin LI; Department of Physics, American University of Beirut, P.O. Box 11-0236, Beirut 1107 2020, Lebanon and Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy 31, 199004 St. Petersburg, Russia., Skvortsov AM; Chemical-Pharmaceutical Academy, Professora Popova 14, 197022 St. Petersburg, Russia., Yan D; Department of Physics, Beijing Normal University, Beijing 100875, China., Schmid F; Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 9, D-55099 Mainz, Germany. |
