Direct Measurement of the g-Factor of Composite Fermions
Schulze-Wischeler, F. · Mariani, E. · Hohls, F. · Haug, R. J.
Original · EN
The activation gap Δ of the fractional quantum Hall states at constant fillings ν=2/3 and 2/5 has been measured as a function of the perpendicular magnetic field B. A linear dependence of Δ on B is observed while approaching the spin polarization transition. This feature allows a direct measurement of the g-factor of composite fermions which appears to be heavily renormalized by interactions and strongly sensitive to the electronic filling factor.
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