4 papers
Phonon drag thermopower and weak localization
A. Miele, R. Fletcher, E. Zaremba +3
Previous experimental work on a two-dimensional (2D) electron gas in a Si-on-sapphire device led to the conclusion that both conductivity and phonon drag thermopower are affe…
Metal Insulator transition at B=0 in p-SiGe
P. T. Coleridge, R. L. Williams, Y. Feng +1
Observations are reported of a metal-insulator transition in a 2D hole gas in asymmetrically doped strained SiGe quantum wells. The metallic phase, which appears at low temperature…
Resonance Patterns of an Antidot Cluster: From Classical to Quantum Ballistics
George Kirczenow, Brad L. Johnson, P. J. Kelly +4
We explain the experimentally observed Aharonov-Bohm (AB) resonance patterns of an antidot cluster by means of quantum and classical simulations and Feynman path integral theory. W…
An Electrostatic Model of Split-Gate Quantum Wires
Yinlong Sun, George Kirczenow, Andrew. S. Sachrajda +1
We present a theoretical model of split-gate quantum wires that are fabricated from GaAs-AlGaAs heterostructures. The model is built on the physical properties of donors and of sem…