Fernando Marianno, Wang Zhou, et al.
INFORMS 2021
We report low-temperature experiments on noise (in equilibrium and in the presence of current flow) in Hall bars with 0.5-m gates across them. The Hall bars were formed on high-mobility GaAs-AlxGa1-xAs heterostructures, and by using the gate we were able to explore the noise characteristics both in the integer quantized Hall effect and for fractional filling factors. In the integer quantized Hall effect, the noise power exhibits plateaus where the resistance does, and it exhibits plateaus in spite of the lack of clear resistance plateaus when the filling factor is fractional beneath the gate. The excess noise found in the experiments is less than that predicted by the simple shot-noise formula. © 1991 The American Physical Society.
Fernando Marianno, Wang Zhou, et al.
INFORMS 2021
U. Wieser, U. Kunze, et al.
Physica E: Low-Dimensional Systems and Nanostructures
J.K. Gimzewski, T.A. Jung, et al.
Surface Science
Gregory Czap, Kyungju Noh, et al.
APS Global Physics Summit 2025