Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2001-04-19
Physics
Condensed Matter
Strongly Correlated Electrons
6 pages, 6 figures
Scientific paper
We report novel manifestation of the valley splitting for the two valley electron system in (100) Si-inversion layers at low carrier density. We found that valley splitting causes almost 100% modulation of the Shubnikov de Haas oscillations in very low magnetic fields, almost on the bound of the quantum interference peak of the negative magnetoresistance. From the interference pattern of oscillations we determined the valley splitting in the B=0 limit which appears to vary only within a factor of 1.3 over the density range (3-7)x10^{11}/cm^2. We found also that level broadenings in both electron valleys differ only by < 3%. The latter result shows that the inter-valley scattering is not responsible for the strong (six fold) `metallic-like' changes of the resistivity with temperature.
Bauer Gerry
Brunthaler Gerhard
Prinz A. A.
Pudalov V. M.
Punnoose Alexander
No associations
LandOfFree
Valley Splitting in Si-Inversion Layers at Low Magnetic Fields 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 Valley Splitting in Si-Inversion Layers at Low Magnetic Fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valley Splitting in Si-Inversion Layers at Low Magnetic Fields will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-140681