316 citations · 7.2k across the 207 of their papers we have counts for
5 papers · 1 filter
Observation of fractional quantum Hall effect at even-denominator 1/2 and 1/4 fillings in asymmetric wide quantum wells
J. Shabani, T. Gokmen, Y. T. Chiu +1
We report the observation of developing fractional quantum Hall states at Landau level filling factors and 1/4 in electron systems confined to wide GaAs quantum wells with…
Density dependence of valley polarization energy for composite fermions
Medini Padmanabhan, T. Gokmen, M. Shayegan
In two-dimensional electron systems confined to wide AlAs quantum wells, composite fermions around the filling factor = 3/2 are fully spin polarized but possess a valley degree…
Effective mass suppression upon complete spin-polarization in an isotropic two-dimensional electron system
T. Gokmen, Medini Padmanabhan, K. Vakili +2
We measure the effective mass (m*) of interacting two-dimensional electrons confined to a 4.5 nm-wide AlAs quantum well. The electrons in this well occupy a single out-of-plane con…
Correlated States of Electrons in Wide Quantum Wells at Low Fillings: The Role of Charge Distribution Symmetry
J. Shabani, T. Gokmen, M. Shayegan
Magneto-transport measurements on electrons confined to a 57 nm-wide, GaAs quantum well reveal that the correlated electron states at low Landau level fillings () display a rema…
Effective mass suppression in a ferromagnetic two-dimensional electron liquid
Reza Asgari, T. Gokmen, B. Tanatar +2
We present numerical calculations of the electron effective mass in an interacting, ferromagnetic, two-dimensional electron system. We consider quantum interaction effects associat…