FROM MAGNETORESISTANCE TO BAND-STRUCTURE OF POLYPARAPHENYLENE DOPED BY ION-IMPLANTATION

Authors
MOLITON A BELLATI A LUCAS B FRANCOIS B
Citation
A. Moliton et al., FROM MAGNETORESISTANCE TO BAND-STRUCTURE OF POLYPARAPHENYLENE DOPED BY ION-IMPLANTATION, Philosophical magazine. B. Physics of condensed matter.Statistical mechanics, electronic, optical and magnetic, 77(3), 1998, pp. 745-764
Citations number
46
Categorie Soggetti
Physics, Applied",Mechanics,"Physics, Condensed Matter","Material Science
Journal title
Philosophical magazine. B. Physics of condensed matter.Statistical mechanics, electronic, optical and magnetic → ACNP
ISSN journal
13642812
Volume
77
Issue
3
Year of publication
1998
Pages
745 - 764
Database
ISI
SICI code
1364-2812(1998)77:3<745:FMTBOP>2.0.ZU;2-L
Abstract
In the case of caesium-implanted polyparaphenylene films (E = 30 keV; 10(15) ions cm(-2) < D < 5 x 10(16) ions cm(-2)), the magnetoresistanc e (and also the thermoelectric) sign is clarified with the assistance of the shape obtained for the density of states near levels associated with doping effects or near levels induced by degradation effects. Th e positive sign is attributed to Coulombic interactions whereas the ne gative sign, related to localization effects, is the result of reducti on in quantum interference due to the magnetic field.