284 citations · 6.2k across the 142 of their papers we have counts for
9 papers · 1 filter
The Localization-Delocalization Transition in Quantum Dots
N. B. Zhitenev, M. Brodsky, R. C. Ashoori +2
Single-electron capacitance spectroscopy precisely measures the energies required to add individual electrons to a quantum dot. The spatial extent of electronic wavefunctions is pr…
New Physics in High Landau Levels
J. P. Eisenstein, M. P. Lilly, K. B. Cooper +2
Recent magneto-transport experiments on ultra-high mobility 2D electron systems in GaAs/AlGaAs heterostructures have revealed the existence of whole new classes of correlated many-…
Missing 2k_F Response for Composite Fermions in Phonon Drag
S. Zelakiewicz, H. Noh, T. J. Gramila +2
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…
New insulating phases of two-dimensional electrons in high Landau levels: observation of sharp thresholds to conduction
K. B. Cooper, M. P. Lilly, J. P. Eisenstein +2
The intriguing re-entrant integer quantized Hall states recently discovered in high Landau levels of high-mobility 2D electron systems are found to exhibit extremely non-linear tra…
Optically Pumped NMR Studies of Electron Spin Polarization and Dynamics: New Constraints on the Composite Fermion Description of nu = 1/2
A. E. Dementyev, N. N. Kuzma, P. Khandelwal +3
The Knight shift and the nuclear spin-lattice relaxation rate 1/T1 of Ga-71 nuclei are measured in GaAs quantum wells at Landau level filling factor nu = 1/2 using optically pumped…
Tunneling into Ferromagnetic Quantum Hall States: Observation of a Spin Bottleneck
H. B. Chan, R. C. Ashoori, L. N. Pfeiffer +1
We explore the characteristics of equilibrium tunneling of electrons from a 3D electrode into a high mobility 2D electron system. For most 2D Landau level filling factors, we find…