Probing the Microscopic Structure of Bound States in Quantum Point Contacts

2007/05/21 by Y. Yoon, L. Mourokh, Lev Mourokh +9 · 54 citations
Computer Science · Physics and Astronomy · #Bound state #Condensed matter physics #Electronic structure #Magnetic field #Physics #Point (geometry) #Quantum #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Semiconductor Quantum Structures and Devices #Spins #Zeeman effect #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.99.136805

published in Physical Review Letters 99(13), 136805 (American Physical Society)

arxiv created 2007/05/21 · openalex publication_date 2007/09/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Using an approach that allows us to probe the electronic structure of strongly pinched-off quantum point contacts (QPCs), we provide evidence for the formation of self-consistently realized bound states (BSs) in these structures. Our approach exploits the resonant interaction between closely coupled QPCs, and demonstrates that the BSs may give rise to a robust confinement of single spins, which show clear Zeeman splitting in a magnetic field.

Citations

• Fano Factor Reduction on the 0.7 Conductance Structure of a Ballistic One-Dimensional Wire
• Detection of Local-Moment Formation Using the Resonant Interaction between Coupled Quantum Wires
• Local Moment Formation in Quantum Point Contacts

Cited by

• Dynamical stabilization and time in open quantum systems
• Width bifurcation and dynamical phase transitions in open quantum systems