Coherence of Elementary Excitations in a Disordered Electron System

Autor:	V. E. Carrasco, G. Zanelatto, J. C. Galzerani, M. B. Ribeiro, Yu. A. Pusep
Rok vydání:	2005
Předmět:	Physics Condensed matter physics Magnetoresistance Superlattice General Physics and Astronomy Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect symbols.namesake Quasiparticle symbols Raman spectroscopy Raman scattering Plasmon Coherence (physics)
Zdroj:	Physical Review Letters. 94
ISSN:	1079-7114 0031-9007
Popis:	The localization properties of the single-particle and collective electron excitations were investigated in the intentionally disordered GaAs/AlGaAs superlattices by weak-field magnetoresistance and Raman scattering. The localization length of the individual electron was found to be considerably larger than that of the collective excitations. This suggests that the disorder has a weaker effect on the electrons than on their collective motion and that the interaction which gives rise to the collective effects increases localization.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::255a4d122697b1579d94e4151c1fb750 https://doi.org/10.1103/physrevlett.94.136407 Zobrazit plný text záznamu