A variational approach to nonlocal exciton–phonon coupling

• Main Authors: Brown, David W., Zhao, Yang, Lindenberg, Katja
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2011
• Subjects: DRNTU::Science::Physics::Atomic physics::Solid state physics
• Online Access: https://hdl.handle.net/10356/92233; http://hdl.handle.net/10220/6730
• Institution: Nanyang Technological University

In this paper we apply variational energy band theory to a form of the Holstein Hamiltonian in which the influence of lattice vibrations (optical phonons) on both local site energies (local coupling) and transfers of electronic excitations between neighboring sites (nonlocal coupling) is taken into...