Virtual Scanning Tunneling Microscopy: A Local Spectroscopic Probe of 2D Electron Systems

Abstract

We propose a novel probe technique capable of performing local low-temperature spectroscopy on a 2D electron system (2DES) in a semiconductor heterostructure. Motivated by predicted spatially-structured electron phases, the probe uses a charged metal tip to induce electrons to tunnel locally, directly below the tip, from a "probe" 2DES to a "subject" 2DES of interest. We test this concept with large-area (non-scanning) tunneling measurements, and predict a high spatial resolution and spectroscopic capability, with minimal influence on the physics in the subject 2DES.

References in corpus (10)

• Metallic behavior and related phenomena in two dimensions
• Evidence for an Anisotropic State of Two-Dimensional Electrons in High Landau Levels
• Charge Density Wave in Two-Dimensional Electron Liquid in Weak Magnetic Field
• Coherent Branched Flow in a Two-Dimensional Electron Gas
• The microscopic nature of localization in the quantum Hall effect
• Universal Aspects of Coulomb Frustrated Phase Separation
• High Resolution Spectroscopy of Two-Dimensional Electron Systems
• Imaging Transport Resonances in the Quantum Hall Effect
• Observation of pinning mode of stripe phases of 2D systems in high Landau levels
• Low-Temperature Collapse of Electron Localisation in Two Dimensions

Cited by in corpus (6)

• Synthetic Topological Qubits in Conventional Bilayer Quantum Hall Systems
• Design of a scanning gate microscope in a cryogen-free dilution refrigerator
• Imaging anyons with scanning tunneling microscopy
• Vertical Field-Effect Transistor Based on Wavefunction Extension
• Local imaging of high mobility two-dimensional electron systems with virtual scanning tunneling microscopy
• Local Interlayer Tunneling Between Two-Dimensional Electron Systems in the Ballistic Regime