On the zero-field quantization of the anomalous quantum Hall effect in two-dimensional moiré layers

S Das Sarma, M Xie - Physical Review B, 2024 - APS
In recent breakthrough experiments, twisted moiré layers of transition-metal dichalcogenides
are found to manifest both integer and fractional quantum anomalous Hall effects in zero …

Fractional quantum Hall effect at the filling factor

KKW Ma, MR Peterson, VW Scarola, K Yang - arXiv preprint arXiv …, 2022 - arxiv.org
The fractional quantum Hall (FQH) effect at the filling factor $\nu= 5/2$ was discovered in
GaAs heterostructures more than 35 years ago. Various topological orders have been …

Gate tuning of fractional quantum Hall states in an InAs two-dimensional electron gas

S Komatsu, H Irie, T Akiho, T Nojima, T Akazaki… - Physical Review B, 2022 - APS
We report the observation of fractional quantum Hall (FQH) effects in a two-dimensional
electron gas (2DEG) confined to an InAs/AlGaSb quantum well, using a dual-gated Hall-bar …

On the zero-field quantization of the anomalous quantum Hall effect in moir\'e 2D layers

SD Sarma, M Xie - arXiv preprint arXiv:2401.05485, 2024 - arxiv.org
In recent breakthrough experiments, twisted moir\'e layers of transition metal
dichalcogenides are found to manifest both integer (IQAHE) and fractional (FQAHE) …

High transparency induced superconductivity in field effect two-dimensional electron gases in undoped InAs/AlGaSb surface quantum wells

EA Bergeron, F Sfigakis, A Elbaroudy… - Applied Physics …, 2024 - pubs.aip.org
We report on transport characteristics of field effect two-dimensional electron gases (2DEGs)
in 24 nm wide indium arsenide surface quantum wells. High quality single-subband …

Development of III-V Semiconductor Surface Quantum Wells for Hybrid Superconducting Device Applications

E Bergeron - 2024 - uwspace.uwaterloo.ca
This thesis concerns the materials development of both InSb/InAlSb and InAs/AlGaSb
surface quantum wells: Two of the most promising platforms for the study of proximity …