S. Zelakiewicz, H. Noh, T. J. Gramila, L. N. Pfeiffer, K. W. West
Published 1999-07-26Version 1
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.
Comments: 4 pages, 3 figures. Submitted to Phys. Rev. Lett
Valley polarization and susceptibility of composite fermions around nu=3/2
Pseudospin Polarization of Composite Fermions under Uniaxial Strain
Composite Fermions with Spin at $ν=1/2$
