Отправить статью по E-mail How a Fano Resonance Crosses the Mobility Edge in Quantum Waveguides
- Авторы: Joe Y.S.1,2, Vargiamidis V.3, Satanin A.M.4, Hedin E.R.1, Kim Y.D.2
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Учреждения:
- Center for Computational Nanoscience, Department of Physics and Astronomy
- Department of Physics
- Aristotle University
- Lobachevsky State University of Nizhny Novgorod (NNGU)
- Выпуск: Том 126, № 6 (2018)
- Страницы: 705-711
- Раздел: Atoms, Molecules, Optics
- URL: https://journals.rcsi.science/1063-7761/article/view/193163
- DOI: https://doi.org/10.1134/S1063776118050035
- ID: 193163
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Аннотация
new scenario for the occurrence of a Fano resonance in the transmission probability of electron waveguides is investigated using a coupled-channel theory. Both a quantum dot and an antidot with either short- or finite-range interaction are embedded in the electron waveguide. Particularly, when the Fano resonance occurs close to the mobility edge (channel threshold), it is shown that Γ~U124/3, where Γ is the resonance width and U12 is the coupling strength between bound state and continuum. This is in contrast to the usual result Γ ~U122, which is valid when the resonance occurs far from the mobility edge. Furthermore, it is shown that increasing the size of both dot and antidot leads to larger resonance width.
Об авторах
Y. Joe
Center for Computational Nanoscience, Department of Physics and Astronomy; Department of Physics
Автор, ответственный за переписку.
Email: ysjoe@bsu.edu
США, Muncie, IN, 47306; Seoul, 02447
V. Vargiamidis
Aristotle University
Email: ysjoe@bsu.edu
Греция, Thessaloniki, GR-54124
A. Satanin
Lobachevsky State University of Nizhny Novgorod (NNGU)
Email: ysjoe@bsu.edu
Россия, Nizhny Novgorod, 603950
E. Hedin
Center for Computational Nanoscience, Department of Physics and Astronomy
Email: ysjoe@bsu.edu
США, Muncie, IN, 47306
Y. Kim
Department of Physics
Email: ysjoe@bsu.edu
Республика Корея, Seoul, 02447
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