4 papers
Phase diagram of the integer quantum Hall effect in p-type Germanium
M. Hilke, D. Shahar, S. H. Song +2
We experimentally study the phase diagram of the integer quantized Hall effect, as a function of density and magnetic field. We used a two dimensional hole system confined in a Ge/…
Semicircle: An exact relation in the Integer and Fractional Quantum Hall Effect
M. Hilke, D. Shahar, S. H. Song +3
We present experimental results on the quantized Hall insulator in two dimensions. This insulator, with vanishing conductivities, is characterized by the quantization (within exper…
The Quantized Hall Insulator: A New Insulator in Two-Dimensions
M. Hilke, D. Shahar, S. H. Song +3
Quite generally, an insulator is theoretically defined by a vanishing conductivity tensor at the absolute zero of temperature. In classical insulators, such as band insulators, van…
Symmetry in the insulator - quantum Hall - insulator transitions observed in a Ge/SiGe quantum well
M. Hilke, D. Shahar, S. H. Song +3
We examine the magnetic field driven insulator-quantum Hall-insulator transitions of the two dimensional hole gas in a Ge/SiGe quantum well. We observe direct transitions between l…