Publications (6)
Half integer features in the quantum Hall Effect: experiment and theory
Tobias Kramer, Eric J. Heller, Robert E. Parrott +6
The quantum Hall effect is one of the most important developments in condensed matter physics of the 20th century. The standard explanations of the famous integer quantized Hall pl…
Probing onset of strong localization and electron-electron interactions with the presence of direct insulator-quantum Hall transition
Shun-Tsung Lo, Kuang Yao Chen, T. L. Lin +11
We have performed low-temperature transport measurements on a disordered two-dimensional electron system (2DES). Features of the strong localization leading to the quantum Hall eff…
Insulator, semiclassical oscillations and quantum Hall liquids at low magnetic fields
Shun-Tsung Lo, Yi-Ting Wang, G Bohra +9
Magneto-transport measurements are performed on two-dimensional GaAs electron systems to probe the quantum Hall (QH) effect at low magnetic fields. Oscillations following the Shubn…
Experimental evidence for direct insulator-quantum Hall transition in multi-layer graphene
Chiashain Chuang, Li-Hung Lin, Nobuyuki Aoki +7
We have performed magnetotransport measurements on a multi-layer graphene flake. At the crossing magnetic field Bc, an approximately temperature-independent point in the measured l…
Probing temperature-driven flow lines in a gated two-dimensional electron gas with tunable spin-splitting
Yi-Ting Wang, Gil-Ho Kim, C. F. Huang +8
We study the temperature flow of conductivities in a gated GaAs two-dimensional electron gas (2DEG) containing self-assembled InAs dots and compare the results with recent theoreti…
Probing Landau quantisation with the presence of insulator-quantum Hall transition in a GaAs two-dimensional electron system
Kuang Yao Chen, Y. H. Chang, C. -T. Liang +9
Magneto-transport measurements are performed on the two-dimensional electron system (2DES) in an AlGaAs/GaAs heterostructure. By increasing the magnetic field perpendicular to the…