Propagation of tightly bound excitons: a simple rst-principles method of exciton kinetics

Chi-Cheng Lee (李啟正), 2 Xiaoqian M. Chen (陈小千), Chen-Lin Yeh (葉 承霖), 4 H. C. Hsueh (薛宏中), Peter Abbamonte, and Wei Ku (顧威) 5 Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan Department of Physics and Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, IL 61801, USA Department of Physics, Tamkang University, Tamsui, Taipei 25137, Taiwan Physics Department, State University of New York, Stony Brook, New York 11790, USA (Dated: May 21, 2012)