Frictional drag between coupled 2D hole gases in GaAs/AlGaAs heterostructures

C. Jörger, Shun-Jen Cheng, W. Dietsche, R. Gerhardts, P. Specht, K. Eberl, K. Von Klitzing

Research output: Contribution to journalConference articlepeer-review

9 Scopus citations


We report on the first measurements of the drag effect between coupled 2D-hole gases. We investigate the coupling by changing the temperature, the carrier densities in the quantum wells and the widths of the barriers between the gases. From the data we are able to attribute the frictional drag to phonon coupling because the non-parabolicity allows the separate tuning of the Fermi wave vector and of the Fermi velocity allowing to distinguish between phonon- and plasmon-dominated coupling.

Original languageEnglish
Pages (from-to)598-601
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Issue number1
StatePublished - 1 Jan 2000
Event13th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-13) - Ottawa, Ont, Can
Duration: 1 Aug 19996 Aug 1999

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