Unified thermopower in the variable range hopping regime
| dc.creator | Boutiche, Said | |
| dc.date | 2009-02-02 | |
| dc.date.accessioned | 2026-07-07T12:36:55Z | |
| dc.date.available | 2026-07-07T12:36:55Z | |
| dc.description | Since nearly 4 decades, various theoretical behaviours have been found for the thermopower in the variable range hopping regime. In 1969, Cutler and Mott have predicted a linear variation with temperature T of the thermopower: S = const.T. In the seventies, it has beenfound by Zvyagin, Overhof and Mott that S = const.T(1/2). In 1986, Triberis and Friedman have found S = const.T^(-1/4) . But there is up to now no theoretical formulation of the thermopower when this one is T-independent. By choosing a specific distribution for the density of states, we show in this paper that all behaviours above can be unified in a unique thermopower formula. We find in addition with this formula, a T-independent expression given by: S=(L/xi)(k/e), in which xi is the wave function decay length and L is a characteristic length, depending on the form of the density of states. | |
| dc.description | 10 pages | |
| dc.identifier | https://arxiv.org/abs/0902.0200 | |
| dc.identifier | http://arxiv.org/abs/0902.0200 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/218262 | |
| dc.subject | Materials Science | |
| dc.title | Unified thermopower in the variable range hopping regime | |
| dc.type | text |