Probing Electron-Electron Interaction in Quantum Hall Systems with Scanning Tunneling Spectroscopy

Probing electron-electron interaction in quantum Hall systems with scanning tunneling spectroscopy.

Using low-temperature scanning tunneling spectroscopy applied to the Cs-induced two-dimensional electron system (2DES) on p-type InSb(110), we probe electron-electron interaction effects in the quantum Hall regime. The 2DES is decoupled from bulk states and exhibits spreading resistance within the insulating quantum Hall phases. In quantitative agreement with calculations we find an exchange en...

Quantum chaotic tunneling in graphene systems with electron-electron interactions

Lei Ying,1 Guanglei Wang,1 Liang Huang,1,2 and Ying-Cheng Lai1,3,* 1School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA 2Institute of Computational Physics and Complex Systems, and Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou, Gansu 730000, China 3Department of Physics, Arizona State University, T...

Exploring the fractional quantum Hall effect with electron tunneling

In this talk I present a summary of recent work on tunnel junctions of a fractional quantum Hall fluid and an electron reservoir, a Fermi liquid. I consider first the case of a single point contact. This is a an exactly solvable problem from which much can be learned. I also discuss in some detail how these solvable junction problems can be used to understand many aspects of the recent electron...

Tunneling Spectroscopy of Disordered Two-Dimensional Electron Gas in the Quantum Hall Regime

Inelastic Electron Tunneling Spectroscopy