5 papers
Effects of a Parallel Magnetic Field on the Metal-Insulator Transition in a Dilute Two-Dimensional Electron System
Kevin Eng, X. G. Feng, Dragana Popovic +1
The temperature dependence of conductivity of a two-dimensional electron system in silicon has been studied in parallel magnetic fields B. At B=0, the system displays a meta…
Effect of Local Magnetic Moments on the Metallic Behavior in Two Dimensions
X. G. Feng, Dragana Popovic, S. Washburn
The temperature dependence of conductivity in the metallic phase of a two-dimensional electron system in silicon has been studied for different concentrations of local magne…
Novel metallic behavior in two dimensions
X. G. Feng, Dragana Popovic, S. Washburn +1
Experiments on a sufficiently disordered two-dimensional (2D) electron system in silicon reveal a new and unexpected kind of metallic behavior, where the conductivity decreases as…
Many-body correlations probed by plasmon-enhanced drag measurements in double quantum well structures
H. Noh, S. Zelakiewicz, X. G. Feng +3
Electron drag measurements of electron-electron scattering rates performed close to the Fermi temperature are reported. While evidence of an enhancement due to plasmons, as was rec…
Negative Electron Drag and Hole-Like behavior in the Integer Quantum Hall Regime
X. G. Feng, S. Zelakiewicz, H. Noh +4
Electron drag between two two-dimensional electron gases in magnetic fields has been observed with a polarity opposite that for zero field. This negative drag requires that the ele…