Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1999-04-22
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages and 4 figures
Scientific paper
10.1103/PhysRevLett.84.4954
The "metallic" regime of holes in GaAs/AlGaAs heterostructures corresponds to densities where two splitted heavy hole bands exist at a zero magnetic field. Using Landau fan diagrams and weak field magnetoresistance curves we extract the carrier density in each band and the interband scattering rates. The measured inelastic rates depend Arrheniusly on temperature with an activation energy similar to that characterizing the longitudinal resistance. The "metallic" characteristics, namely, the resistance increase with temperature, is hence traced to the activation of inelastic interband scattering. The data are used to extract the bands dispersion relations as well as the two particle-hole excitation continua. It is then argued that acoustic plasmon mediated Coulomb scattering might be responsible for the Arrhenius dependence on temperature. The absence of standard Coulomb scattering characterized by a power law dependence upon temperature is pointed out.
Buchstab Evgeny
Prus Oleg
Shapira Shye
Sivan Uri
Stern Ady
No associations
LandOfFree
On the Relation between Interband Scattering and the "Metallic Phase" of Two Dimensional Holes in GaAs/AlGaAs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the Relation between Interband Scattering and the "Metallic Phase" of Two Dimensional Holes in GaAs/AlGaAs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Relation between Interband Scattering and the "Metallic Phase" of Two Dimensional Holes in GaAs/AlGaAs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-626801