STABILITY AND NATURE OF POLARONS IN A 2-SITE 2-ELECTRON MODEL

Authors
DAS AN CHOUDHURY P
Citation
An. Das et P. Choudhury, STABILITY AND NATURE OF POLARONS IN A 2-SITE 2-ELECTRON MODEL, Physical review. B, Condensed matter, 49(18), 1994, pp. 13219-13222
Citations number
11
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
49
Issue
18
Year of publication
1994
Pages
13219 - 13222
Database
ISI
SICI code
0163-1829(1994)49:18<13219:SANOPI>2.0.ZU;2-I
Abstract
A two-site two-electron system is studied in the presence of an electr on-phonon (e-ph) interaction and intersite hopping of the electrons to determine the stability of different polaronic states. Exact energies and eigenfunctions for the triplet and Anderson bipolaronic states ar e found. For the singlet bipolaronic state, the role of different phon on states in lowering the energy is discussed. The nature of polarons with the variation in e-ph coupling strength is studied.