STATIC HYPERPOLARIZABILITY OF POLYMERS - EXACT HUBBARD RESULTS

Authors
MAHAN GD ROJO AG
Citation
Gd. Mahan et Ag. Rojo, STATIC HYPERPOLARIZABILITY OF POLYMERS - EXACT HUBBARD RESULTS, Physical review. B, Condensed matter, 50(4), 1994, pp. 2642-2644
Citations number
23
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
50
Issue
4
Year of publication
1994
Pages
2642 - 2644
Database
ISI
SICI code
0163-1829(1994)50:4<2642:SHOP-E>2.0.ZU;2-F
Abstract
The Hubbard model with bond alteration is used to calculate the hyperp olarizability gamma of polymers. Exact numerical solutions are found f or short chains of N sites. The hyperpolarizability is represented as gamma is-proportional-to N(n). The exponent n is over six for no bond alteration, and declines slowly with increasing bond alteration. This behavior is compared with the measurements in polythiopehene.