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Electric Field Effect Tuning of Electron-Phonon Coupling in Graphene
Jun Yan, Yuanbo Zhang, Philip Kim +1
Gate-modulated low-temperature Raman spectra reveal that the electric field effect (EFE), pervasive in contemporary electronics, has marked impacts on long wavelength optical phono…
Absorption in the fractional quantum Hall regime: trion dichroism and spin polarization
J. G. Groshaus, P. Plochocka-Polack, M. Rappaport +7
We present measurements of optical interband absorption in the fractional quantum Hall regime in a GaAs quantum well in the range 0 < nu < 1. We investigate the mechanism of single…
Transition from Free to Interacting Composite Fermions away from =1/3
Y. Gallais, T. H. Kirschenmann, I. Dujovne +5
Spin excitations from a partially populated composite fermion level are studied above and below . In the range the experiments uncover significant departures fro…
Resonant Rayleigh scattering from quantum phases of cold electrons in semiconductor heterostructures
S. Luin, V. Pellegrini, A. Pinczuk +3
Resonant Rayleigh scattering of light from electrons confined in gallium arsenide double quantum wells displays significant changes at temperatures that are below one degree Kelvin…
Spin excitations in the Fractional Quantum Hall regime at
Y. Gallais, T. H. Kirschenmann, C. F. Hirjibehedin +4
We report inelastic light scattering experiments in the fractional quantum Hall regime at filling factors . A spin mode is observed below the Zeeman energy. The filli…