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Phys. Rev. B 67, 035303 (2003) [13 pages]

Magnetopolaron in a weakly elliptical InAs/GaAs quantum dot

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L. Jacak1, J. Krasnyj2,*, D. Jacak3, and P. Machnikowski1
1Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
2Institute of Mathematics, University of Opole, Oleska 48, 45-051 Opole, Poland
3Institute of Mathematics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Received 13 December 2001; revised 16 May 2002; published 13 January 2003

We study theoretically the properties of a polaron formed in a shallow, weakly elliptical, disk-shaped InAs/GaAs quantum dot in the presence of a magnetic field by using the Davydov’s canonical transformation. Special attention is paid to the energy-level splitting due to the Fröhlich interaction of an electron in a quantum dot with optical phonons near resonance. The polaron relaxation rates, including the anharmonicity induced channel, are analyzed for various confinement energies and magnetic field magnitudes, taking into account coherent polaronic effects.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.67.035303
DOI:
10.1103/PhysRevB.67.035303
PACS:
73.21.La, 71.38.-k, 03.67.Lx

*On leave from Institute of Physics, Odessa University, Ukraine.

 
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