6 papers
Metallic and Insulating behaviour in p-SiGe at nu = 3/2
P. T. Coleridge, R. L. Williams, J. Lapointe +1
Shubnikov-de Haas data is presented for a p-SiGe sample exhibiting strongly insulating behaviour at nu = 3/2. In addition to the fixed points defining a high field metal- insulator…
"Forbidden" transitions between quantum Hall and insulating phases in p-SiGe heterostructures
M. R. Sakr, Maryam Rahimi, S. V. Kravchenko +3
We show that in dilute metallic p-SiGe heterostructures, magnetic field can cause multiple quantum Hall-insulator-quantum Hall transitions. The insulating states are observed betwe…
Interaction effects and the metallic phase in p-SiGe
P. T. Coleridge, A. S. Sachrajda, P. Zawadzki
Magnetoresistance results are presented for p-SiGe samples on the metallic side of the B=0 metal-insulator transition. The results cannot be understood within the framework of stan…
Weak localisation, interaction effects and the metallic phase in p-SiGe
P. T. Coleridge, A. S. Sachrajda, P. Zawadzki
Magnetoresistance results are presented for p-SiGe samples on the metallic side of the B=0 metal-insulator transition. It was possible to separate the weak localisation and Zeeman…
Quantum Phase Transitions in the p-SiGe system
P. T. Coleridge, P. Zawadzki, A. Sachrajda +2
The rich variety of phase transitions observed in the strained p-SiGe system are considered and compared. It is shown that the integer quantum Hall effect transitions, the Hall ins…
Adiabatic Behaviour of a 2-D Hole Gas near the B=0 Metal-Insulator transition
P. T. Coleridge, A. S. Sachrajda, P. Zawadzki +2
No abstract available.