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Proceedings Paper

Hydrostatic pressure and electric field effect on electronic states in double quantum rings
Author(s): H. M. Baghramyan; M. G. Barseghyan; C. A. Duque; A. A. Kirakosyan
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Paper Abstract

Using the effective mass approximation and the transfer matrix formalism, we have calculated the ground state energy of electron in 0.7 0.3 GaAs/Ga0.7Al0.3As concentric double quantum rings under the combined effects of electric field and hydrostatic pressure. The ground state energy dependences on the electric field, hydrostatic pressure and width of outer ring are reported for different values of the thickness of rings. We have found that for low pressure regime (less than P = 8.37 kbar ) the ground state energy decreases slower than for high pressure regime (higher then P = 8.37 kbar ). Additionally, we have found that the effect of hydrostatic pressure on ground state energy mainly depends on the electric field strength and the sizes of quantum ring.

Paper Details

Date Published: 25 January 2012
PDF: 10 pages
Proc. SPIE 8414, Photonics and Micro- and Nano-structured Materials 2011, 84140C (25 January 2012); doi: 10.1117/12.923304
Show Author Affiliations
H. M. Baghramyan, Yerevan State Univ. (Armenia)
M. G. Barseghyan, Yerevan State Univ. (Armenia)
Base College of Yerevan State Univ. of Architecture and Construction (Armenia)
C. A. Duque, Univ. de Antioquia (Colombia)
A. A. Kirakosyan, Yerevan State Univ. (Armenia)

Published in SPIE Proceedings Vol. 8414:
Photonics and Micro- and Nano-structured Materials 2011
Rafael Kh. Drampyan, Editor(s)

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