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arXiv · 0705.3019

Probing the microscopic structure of bound states in quantum point contacts

Y. Yoon·L. Mourokh·T. Morimoto·N. Aoki·Y. Ochiai·J. L. Reno·J. P. Bird
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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.

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Y. Yoon, L. Mourokh, T. Morimoto, N. Aoki, Y. Ochiai, J. L. Reno, J. P. Bird. 2007-05-21. Probing the microscopic structure of bound states in quantum point contacts. https://doi.org/10.1103/physrevlett.99.136805

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