Missing 2k_F Response for Composite Fermions in Phonon Drag

Abstract

The response of composite Fermions to large wavevector scattering has been studied through phonon drag measurements. While the response retains qualitative features of the electron system at zero magnetic field, notable discrepancies develop as the system is varied from a half-filled Landau level by changing density or field. These deviations, which appear to be inconsistent with the current picture of composite Fermions, are absent if half-filling is maintained while changing density. There remains, however, a clear deviation from the temperature dependence anticipated for 2k_F scattering.

4 pages, 3 figures. Submitted to Phys. Rev. Lett

References in corpus (5)

• Coulomb Drag in the Extreme Quantum Limit
• Frictional drag between quantum wells mediated by phonon exchange
• Coulomb drag in compressible quantum Hall states
• Coulomb drag in double layer electron systems at even denominator filling factors
• Frictional drag between spatially separated two-dimensional electron gases mediated by virtual phonon exchange

Cited by in corpus (5)

• Coulomb drag
• Hydrodynamic flows of non-Fermi liquids: magnetotransport and bilayer drag
• Frictional magnetodrag between spatially separated two-dimensional electron systems: Coulomb versus phonon mediated electron-electron interaction
• Comment on 'Missing 2$k_F$ Response for Composite Fermions in Phonon Drag'
• Near-field heat transfer and drag resistance in bilayers of composite fermions