Probing the microscopic structure of bound states in quantum point contacts

Details Probing the microscopic structure of bound states in quantum point contacts Probing the microscopic structure of bound states in quantum point contacts

2007-05-21

arxiv.org/abs/0705.3019v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevLett.99.136805

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.

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