2001/10/16 by Jayita Chatterjee, Chatterjee, Jayita, A. N. Das +3
Engineering · Physics and Astronomy · #Acoustic Wave Resonator Technologies #Condensed Matter (cond-mat) #FOS: Physical sciences #GaN-based semiconductor devices and materials #Quantum and electron transport phenomena #cond-mat
paper · pdf · doi:10.48550/arxiv.cond-mat/0110308
4 pages (REVTEX), 3 psfigures included, revised version
openalex publication_date 2001/10/16 · arxiv created 2002/11/22 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A simple variational displacement phonon basis, obtained through the modified Lang-Firsov (MLF) transformation, is proposed to study the Holstein model.This phonon basis contains only one variational parameter, but capable of describing lattice distortions at distant sites from the charge carrier. Perturbation method based on this MLF basis is employed to calculate the single-electron ground-state energy and static charge-lattice deformation correlation as a function of electron-phonon coupling. The energy obtained up to the second-order perturbation within this approach agrees well with the available numerical results for the entire range of coupling strength.