151 citations · 287 across the 9 of their papers we have counts for
9 papers
Correlated states of 2D electrons near the Landau level filling
Yoon Jang Chung, D. Graf, L. W. Engel +6
The ground state of two-dimensional electron systems (2DESs) at low Landau level filling factors () has long been a topic of interest and controversy in condensed mat…
Record-quality GaAs two-dimensional hole systems
Yoon Jang Chung, C. Wang, S. K. Singh +6
The complex band structure, large spin-orbit induced band splitting, and heavy effective mass of two-dimensional (2D) hole systems hosted in GaAs quantum wells render them rich pla…
Ultra-high quality two-dimensional electron systems
Yoon Jang Chung, K. A. Villegas-Rosales, K. W. Baldwin +4
Two-dimensional electrons confined to GaAs quantum wells are hallmark platforms for probing electron-electron interaction. Many key observations have been made in these systems as…
Heterostructure design to achieve high quality, high density GaAs 2D electron system with -factor tending to zero
Yoon Jang Chung, S. Yuan, Yang Liu +4
Hydrostatic pressure is a useful tool that can tune several key parameters in solid state materials. For example, the Landé -factor in GaAs two-dimensional electron systems (2DE…
Working principles of doping-well structures for high-mobility two-dimensional electron systems
Yoon Jang Chung, K. A. Villegas Rosales, K. W. Baldwin +3
Suppressing electron scattering is essential to achieve high-mobility two-dimensional electron systems (2DESs) that are clean enough to probe exotic interaction-driven phenomena. I…
Spatial Mapping of Local Density Variations in Two-dimensional Electron Systems Using Scanning Photoluminescence
Yoon Jang Chung, Kirk W. Baldwin, Kenneth W. West +4
We have developed a scanning photoluminescence technique that can directly map out the local two-dimensional electron density with a relative accuracy of cm$^{-…
Multivalley two-dimensional electron system in an AlAs quantum well with mobility exceeding cmVs
Yoon Jang Chung, K. A. Villegas Rosales, H. Deng +4
Degenerate conduction-band minima, or `valleys', in materials such as Si, AlAs, graphene, and MoS allow them to host two-dimensional electron systems (2DESs) that can access a…
Surface segregation and the Al problem in GaAs quantum wells
Yoon Jang Chung, K. W. Baldwin, K. W. West +2
Low-defect two-dimensional electron systems (2DESs) are essential for studies of fragile many-body interactions that only emerge in nearly-ideal systems. As a result, numerous effo…
Design rules for modulation-doped AlAs quantum wells
Yoon Jang Chung, K. W. Baldwin, K. W. West +3
Thanks to their multi-valley, anisotropic, energy band structure, two-dimensional electron systems (2DESs) in modulation-doped AlAs quantum wells (QWs) provide a unique platform to…