Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2002-02-14
Phys. Rev. Lett. 90, 086801 (2003)
Physics
Condensed Matter
Strongly Correlated Electrons
Revised version with new co-authors and additional results
Scientific paper
10.1103/PhysRevLett.90.086801
We develop a theory for frictional drag between two 2D hole layers in a dilute bilayer GaAs hole system, including effects of hole-hole and hole-phonon interactions. Our calculations suggest significant enhancement of hole drag transresistivity over the corresponding electron drag results. This enhancement originates from the exchange induced renormalization of the single layer compressibility and the strong dependence of single layer conductivity on density. We also address the effect of hole-phonon interaction on the drag temperature dependence. Our calculated results are in reasonable quantitative agreement with recent experimental observations.
Braude V.
Hwang Euyheon H.
Sarma Sankar Das
Stern Ady
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