Citation
C. Jorger et al., Frictional drag between coupled two-dimensional hole gases in GaAs/Al0.3Ga0.7As heterostructures, PHYS REV B, 62(3), 2000, pp. 1572-1575
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829
→ ACNP
Volume
62
Issue
3
Year of publication
2000
Pages
1572 - 1575
Database
ISI
SICI code
0163-1829(20000715)62:3<1572:FDBCTH>2.0.ZU;2-T
Abstract
We report on measurements of the drag effect between coupled two-dimensiona
l hole gases. We investigate the coupling by changing the carrier densities
in the quantum wells, the widths of the barriers between the gases, and th
e perpendicular magnetic field. We make use of the nonparabolicity of the h
ole-dispersion curves to tune the Fermi wave vector and the Fermi velocity
separately. With this technique we find that the frictional drag is mainly
due to phonon coupling.