NOVEL COULOMB GLASS CREATION IN ELECTRONIC ONE-DIMENSIONAL SYSTEMS

Citation
Kj. Donovan et al., NOVEL COULOMB GLASS CREATION IN ELECTRONIC ONE-DIMENSIONAL SYSTEMS, Synthetic metals, 57(2-3), 1993, pp. 5032-5039
Citations number
7
Categorie Soggetti
Physics, Condensed Matter","Metallurgy & Mining
Journal title
ISSN journal
03796779
Volume
57
Issue
2-3
Year of publication
1993
Pages
5032 - 5039
Database
ISI
SICI code
0379-6779(1993)57:2-3<5032:NCGCIE>2.0.ZU;2-N
Abstract
Experimental evidence is presented that demonstrates how a light pulse incident upon a ID semiconductor, PDATS, in zero field, seeds that se miconductor with charge held in a stable state, unrecombined, for time s on the order of milliseconds. Application of an electric field at la ter time releases some of this seed charge which is measured whilst th e remainder recombines. The fraction that is released is dependent on electric field in a fashion describable in terms of the Onsager model of geminate recombination in 1D. Two models for this effect are put fo rward and discussed. In the first a distribution of traps are availabl e to hold the carriers for long times. The second model involves the f ormation of interchain excitons and coulomb glass states to hold the c harge.