Phonon confinement effect on the polaron states in a double quantum ring structure in the presence of electric and magnetic fields

Yeranosyan, Mkrtich A.; Vartanian, Arshak L.; Shahbandari, Abbas; Kirakosyan, A.A.

doi:10.1016/j.physb.2014.09.024

Cited by 3 publications

(2 citation statements)

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“…The one-electron ground state in the presence of lateral electric and magnetic field as well, has only been studied in two works [27,28]. The aim of the present work is to study in details the effect of lateral electric field on electronic states (ground and excited) and intraband optical absorption spectrum in a two-dimensional CQDR.…”

Section: Introductionmentioning

confidence: 98%

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Influence of lateral electric field on intraband optical absorption in concentric double quantum rings

Baghramyan

Barseghyan

Laroze

et al. 2016

Physica E: Low-dimensional Systems and Nanostructures

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. (2016) Influence of lateral electric field on intraband optical absorption in concentric double quantum rings. Physica E: Low-Dimensional Systems and Nanostructures, 77, pp. 81-89.There may be differences between this version and the published version. You are advised to consult the publisher's version if you wish to cite from it.http://eprints.gla.ac.uk/113327/ AbstractThe influence of lateral electric field on one-electron states and intraband absorption in two-dimensional concentric double quantum rings is investigated. The confining potential of the rings is modeled as a double harmonic central potential. Using the exact diagonalization technique, we calculate the dependence of the electron energy spectrum as a function of the electric field strength as well as the inner ring radius. Also, different values of confinement strength are considered. Selection rule is obtained for intraband transitions, caused by the direction of incident light polarization. The intraband absorption coefficient is calculated for different values of electric field strength, inner ring radius, confinement strength and incident light polarization direction. The combined influence of electric field strength and change of confining strength show that while the increment of the first one leads only to blueshift of absorption spectrum, the augment of the second one makes the redshift. In addition, both blueshift and redshift of the spectrum have been obtained with the enlargement of inner ring radius. Finally, we show that the absorption spectrum undergoes redshift by changing the polarization of incident light from x to y axis.

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Section: Introductionmentioning

confidence: 98%

“…In the past decade, a number of works were devoted to the theoretical investigation of the influence of electric fields on the electronic and optical properties of QR structures [16][17][18][19][20][21][22][23][24][25][26][27][28]. For instance, in Ref.…”

Section: Introductionmentioning

confidence: 99%