中国物理B ›› 2009, Vol. 18 ›› Issue (9): 3940-3951.doi: 10.1088/1674-1056/18/9/054
田强1, 徐权2
Xu Quan(徐权)a)b)† and Tian Qiang(田强)b)
摘要: We investigate the interactions of lattice phonons with Frenkel exciton, which has a small radius in a two-dimensional discrete molecular lattice, by the virtue of the quasi-discreteness approximation and the method of multiple-scale, and obtain that the self-trapping can also appear in the two-dimensional discrete molecular lattice with harmonic and nonlinear potential. The excitons' effect on the molecular lattice does not distort it but only causes it to localize which enables it to react again through phonon coupling to trap the energy and prevent its dispersion.
中图分类号: (Phonon interactions with other quasiparticles)