Imaging Electron Wave Functions Inside Open Quantum Rings

Abstract

Combining Scanning Gate Microscopy (SGM) experiments and simulations, we demonstrate low temperature imaging of electron probability density $|\Psi {|}^2(x,y)$ in embedded mesoscopic quantum rings (QRs). The tip-induced conductance modulations share the same temperature dependence as the Aharonov-Bohm effect, indicating that they originate from electron wavefunction interferences. Simulations of both $|\Psi {|}^2(x,y)$ and SGM conductance maps reproduce the main experimental observations and link fringes in SGM images to $|\Psi {|}^2(x,y)$.

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References in corpus (10)

• Scanned Probe Microscopy of Electronic Transport in Carbon Nanotubes
• Coherent Branched Flow in a Two-Dimensional Electron Gas
• Imaging Magnetic Focusing of Coherent Electron Waves
• Imaging Fractal Conductance Fluctuations and Scarred Wave Functions in a Quantum Billiard
• Topographic Mapping of the Quantum Hall Liquid using a Few-Electron Bubble
• Spatially resolved manipulation of single electrons in quantum dots using a scanned probe
• Imaging a Single-Electron Quantum Dot
• Imaging and controlling electron transport inside a quantum ring
• Measurement of the Tip-Induced Potential in Scanning Gate Experiments
• Statistical model of dephasing in mesoscopic devices introduced in the scattering matrix formalism

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