Quantum Point Contacts and Coherent Electron Focusing

TL;DR

This paper explores quantum point contacts and coherent electron focusing, discussing conductance quantization, optical analogues, classical and coherent electron focusing, and mode-interference phenomena, highlighting the quantum coherence effects in electron transport.

Contribution

It provides a comprehensive analysis of coherent electron focusing and mode-interference phenomena in quantum point contacts, combining experimental insights with theoretical understanding.

Findings

Observation of conductance quantization in quantum point contacts

Demonstration of optical analogue of conductance quantization

Identification of mode-interference effects in coherent electron focusing

Abstract

I. Introduction II. Electrons at the Fermi level III. Conductance quantization of a quantum point contact IV. Optical analogue of the conductance quantization V. Classical electron focusing VI. Electron focusing as a transmission problem VII. Coherent electron focusing (Experiment, Skipping orbits and magnetic edge states, Mode-interference and coherent electron focusing) VIII. Other mode-interference phenomena