DEPHASING OF BALLISTIC ELECTRONS AS A FUNCTION OF TEMPERATURE AND CARRIER DENSITY

Citation
A. Yacoby et al., DEPHASING OF BALLISTIC ELECTRONS AS A FUNCTION OF TEMPERATURE AND CARRIER DENSITY, Semiconductor science and technology, 9(5), 1994, pp. 907-910
Citations number
10
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Condensed Matter","Material Science
ISSN journal
02681242
Volume
9
Issue
5
Year of publication
1994
Supplement
S
Pages
907 - 910
Database
ISI
SICI code
0268-1242(1994)9:5<907:DOBEAA>2.0.ZU;2-U
Abstract
Dephasing of ballistic electrons is measured as a function of both tem perature and Fermi energy in a high-mobility two-dimensional electron gas. We find a qualitative agreement between the measured phase-breaki ng length and the theoretical prediction for the electron-electron sca ttering length using the value of E(F) measured with large-area Hall b ars. A good quantitative agreement is obtained when a local value of E (F), measured via on-chip magnetic focusing, is used. The good agreeme nt between the measured phase-breaking length and the theoretical elec tron-electron scattering length strongly suggests that these two quant ities are the same in the ballistic regime.