Polaron states in a double quantum ring structure in the presence of electric and magnetic fields

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

doi:10.1016/j.spmi.2013.01.011

Cited by 10 publications

(6 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Herein, its angular distribution essentially changes. The obtained result is in good qualitative agreement with the results of paper [14]. If the nanostructure studied is driven by a homogeneous magnetic field with the induction B directed along Oz axis, then, an increasing B (at 43704-4 Probability density of electron (in ground state) location in a nanostructure |Φ 1 (ρ, ϕ)| 2 ρ at L = 5 nm, ρ 0 = 5a GaAs , h 1 = 18a GaS , ∆ = 3a GaS , h 2 = 17a GaS and different electric field intensity: F = 0, 1, 1.5, 2.5 MV/m.…”

Section: Analysis Of the Resultssupporting

confidence: 90%

“…Herein, its angular distribution essentially changes. The obtained result is in good qualitative agreement with the results of paper [14]. If the nanostructure studied is driven by a homogeneous magnetic field with the induction B directed along Oz axis, then, an increasing B (at F = 0) causes an increasing localization of the electron (in ground state) in the inner ring.…”

Section: Analysis Of the Resultssupporting

confidence: 88%

“…Cylindrical semiconductor quantum rings are intensively investigated theoretically [8][9][10][11][12][13][14]. Changing the geometric sizes of the rings one can affect the energy spectra of quasiparticles and obtain the necessary optical properties.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electron energy spectrum and oscillator strengths of quantum transitions in double quantum ring nanostructure driven by electric field

Maкhanets¹,

Gutsul²,

Kuchak³

2018

Condens. Matter Phys.

View full text Add to dashboard Cite

The effect of homogeneous electric field on the energy spectrum, wave functions of electron and oscillator strengths of intra-band quantum transitions in a double cylindrical quantum ring (GaAs/Al x Ga 1−x As) is studied within the approximations of effective mass and rectangular potentials. The calculations are performed using the method of expansion of quasiparticle wave function over a complete set of cylindrical wave functions obtained as exact solutions of Schrödinger equation for an electron in a nanostructure without electric field. It is shown that the electric field essentially affects the electron localization in the rings of a nanostructure. Herein, the electron energies and oscillator strengths of intra-band quantum transitions non-monotonously depend on the intensity of electric field.

show abstract

Section: Analysis Of the Resultssupporting

confidence: 90%

“…Herein, its angular distribution essentially changes. The obtained result is in good qualitative agreement with the results of paper [14]. If the nanostructure studied is driven by a homogeneous magnetic field with the induction B directed along Oz axis, then, an increasing B (at F = 0) causes an increasing localization of the electron (in ground state) in the inner ring.…”

Section: Analysis Of the Resultssupporting

confidence: 88%

See 1 more Smart Citation

Electron energy spectrum and oscillator strengths of quantum transitions in double quantum ring nanostructure driven by electric field

Maкhanets¹,

Gutsul²,

Kuchak³

2018

Condens. Matter Phys.

View full text Add to dashboard Cite

show abstract

“…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%

“…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%

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

View full text Add to dashboard Cite

. (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.

show abstract

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

Yeranosyan

Vartanian

Shahbandari

et al. 2015

Physica B: Condensed Matter

View full text Add to dashboard Cite

Polaron states in a double quantum ring structure in the presence of electric and magnetic fields

Cited by 10 publications

References 36 publications

Electron energy spectrum and oscillator strengths of quantum transitions in double quantum ring nanostructure driven by electric field

Electron energy spectrum and oscillator strengths of quantum transitions in double quantum ring nanostructure driven by electric field

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

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

Contact Info

Product

Resources

About