2 papers
cond-mat.mes-hall2002
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…
cond-mat.str-el2001
"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…