On the ion- and electron-phonon interaction effects on impurity states in polar cylindrical quantum wires

Details On the ion- and electron-phonon interaction effects on impurity states in polar cylindrical quantum wires On the ion- and electron-phonon interaction effects on impurity states in polar cylindrical quantum wires

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jap...103e3704z&link_type=abstract

Journal of Applied Physics, Volume 103, Issue 5, pp. 053704-053704-6 (2008).

Physics

6

Polarons And Electron-Phonon Interactions, Impurity And Defect Levels

Scientific paper

The phonon effect on the hydrogenic impurity states in a polar cylindrical quantum wire is studied by taking both the confined bulk longitudinal-optical and interface-optical (IO) phonons into account. The binding energies are calculated as functions of the transverse dimension of the quantum wire and the donor-impurity position. The numerical results confirm that screening effect for the Coulomb potential caused by the ion-phonon coupling is generally dominant in various phonon contributions to the impurity states in quantum wires. It is also shown that the IO phonon modes play an important role when the impurity shifts toward the surface.

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