Localized self-trapping in two-dimensional molecular lattice with interaction between Wannier-Mott e

• 作 者: 徐权 田强
• 机 构: Department of Physics,Daqing Normal University,Department of Physics,Beijing Normal University,
• 出 处: Chinese Physics B
• 发表日期: 2010年09期
• 关键词: phonon trapping exciton soliton harmonic localized dipole radius motional Hamilt

We investigate the interactions of lattice phonons with Wannier-Mott exciton, the exciton that has a large radius in two-dimensional molecular lattice, by the method of continuum limit approximation, and obtain that the self-trapping can also appear in two-dimensional molecular lattice with a harmonic and nonlinear potential. The exciton effect on molecular lattice does not distort the molecular lattice but only makes it localized and the localization can also react, again through phonon coupling, to trap the energy and prevents its dispersion.

We investigate the interactions of lattice phonons with Wannier-Mott exciton, the exciton that has a large radius in two-dimensional molecular lattice, by the method of continuum limit approximation, and obtain that the self-trapping can also appear in two-dimensional molecular lattice with a harmonic and nonlinear potential. The exciton effect on molecular lattice does not distort the molecular lattice but only makes it localized and the localization can also react, again through phonon coupling, to trap the energy and prevents its dispersion.