171 citations · 2.1k across the 95 of their papers we have counts for
11 papers · 2 filters
Observation of low-lying excitations of electrons in coupled quantum dots
Cesar Pascual Garcia, Sokratis Kalliakos, Vittorio Pellegrini +4
Tunneling excitations of electrons in dry-etched modulation-doped AlGaAs/GaAs coupled quantum dots (QDs) are probed by resonant inelastic light scattering. A sequence of intra- and…
Negative Differential Resistance and Astability of the Wigner Solid
G. A. Csathy, D. C. Tsui, L. N. Pfeiffer +1
We report an unusual breakdown of the magnetically induced Wigner solid in an exceptional two-dimensional electron gas. The current-voltage characteristic is found to be hysteretic…
Resistively-Detected NMR in a Two-Dimensional Electron System near : Clues to the Origin of the Dispersive Lineshape
L. A. Tracy, J. P. Eisenstein, L. N. Pfeiffer +1
Resistively-detected NMR measurements on 2D electron systems near the quantum Hall state are reported. In contrast to recent results of Gervais \emph{et al.} [Phys. Rev. Let…
The microwave induced resistance response of a high mobility 2DEG from the quasi-classical limit to the quantum Hall regime
S. A. Studenikin, M. Byszewski, D. K. Maude +6
Microwave induced resistance oscillations (MIROs) were studied experimentally over a very wide range of frequencies ranging from ~20 GHz up to ~4 THz, and from the quasi-classical…
Surface Acoustic Wave Propagation and Inhomogeneities in Low Density Two-Dimensional Electron Systems Near the Metal-Insulator Transition
L. A. Tracy, J. P. Eisenstein, M. P. Lilly +2
We have measured the surface acoustic wave velocity shift in a GaAs/AlGaAs heterostructure containing a two-dimensional electron system (2DES) in a low-density regime ( $10^{10}…
Quantization of the diagonal resistance: Density gradients and the empirical resistance rule in a 2D system
W. Pan, J. S. Xia, H. L. Stormer +7
We have observed quantization of the diagonal resistance, R_xx, at the edges of several quantum Hall states. Each quantized R_xx value is close to the difference between the two ad…