Polaronic Effect on the Ground-State Energy of an Electron Bound to an Impurity in Spherical Quantum Dots

Fliyou, M.; Satori, Hassan; Bouayad, M.

doi:10.1002/(sici)1521-3951(199903)212:1<97::aid-pssb97>3.0.co;2-k

Cited by 11 publications

(8 citation statements)

References 12 publications

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“…2 that this energy shift is more significant for a strong confinement size and decreases in proportion with the increase of the dot dimension [20]. In the case of an infinite potential barrier, the localization of the electron becomes more pronounced and thus increases both the electron±LO phonon interaction E e-LO and the exchange between the fixed positive charge and electron via the LO confined phonon E ex e-LO-ion .…”

Section: Resultsmentioning

confidence: 59%

“…Chen et al [19] have examined the effect of thickness on the binding energy of bound polaron in a parabolic quantum dot subjected to a magnetic field by using the second-order perturbation theory and taking only the electron±bulk LO phonon coupling into account. However, in most studies done previously, the interaction between the fixed positive charge and optical phonons (LO and SO) [20,21] has been considered. This last interaction will be able to have the same importance as the electron± phonon coupling in these confined systems.…”

Section: Introductionmentioning

confidence: 99%

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Charge Carrier-Phonon Coupling in Cylindrical Quantum Dots

Charrour

Bouhassoune

Barnoussi³

et al. 2000

phys. stat. sol. (b)

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Section: Resultsmentioning

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Charge Carrier-Phonon Coupling in Cylindrical Quantum Dots

Charrour

Bouhassoune

Barnoussi³

et al. 2000

phys. stat. sol. (b)

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“…2) we notice that on the one hand, both corrections augment proportionally with the height and on the other hand the The same results are shown for the surface optical phonon modes in spherical quantum dot [24]. The effect of TSO phonon modes on the binding energy presents a prominent impact only for the small dot (weak thickness).…”

Section: R E T H E E F F E C T I V E P O T E N T I a L S I N D U C E mentioning

confidence: 99%

Polaron Effect on the Binding Energy of Shallow Donor in Cylindrical Quantum Dot

et al. 1999

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In the framework of the effective-mass approximation and the modified Lee-Low-Pines variational method, we present a theoretical study of the effect of the confined longitudinal-optical phonon and two types of surface--optical phonon (top and side mode) on the binding energy of shallow donor in cylindrical quantum dot. The effect of quantum confinement is described by an infinitely deep potential well. The impact of these different phonon modes is important and depends on the dimension of the quantum dot.

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“…Fedorov and Baranov 25 have studied the effect of LO and surface optical ͑SO͒ phonons on the donor energy. Fliyou et al 26 have calculated the binding energy of a hydrogenic impurity in a GaAs QNC using the Lee, Low, and Pines transformation 27 and the variational method. In a ZnSe QNC, Xie, and Chen 28 have shown that the phonon contribution to the binding energy is dependent on the position of the donor.…”

Section: Introductionmentioning

confidence: 99%

Magnetic field effect on the polarizability of bound polarons in quantum nanocrystallites

Feddi¹,

Haouari²,

Assaid

et al. 2003

Phys. Rev. B

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We have studied the simultaneous effects of magnetic and electric fields on the ground-state energy of a donor impurity confined in a polar CdSe quantum nanocrystallite embedded in a nonpolar matrix. Calculations are performed in the framework of the effective-mass approximation using the Hassé variational approach. We describe the effect of the quantum confinement by a finite deep potential and we take onto account the interaction between the charge carriers ͑electron and ion͒ and the confined longitudinal optical phonons ͑LO phonons͒. It is found that the corrections due to the LO phonons on the binding energy, the diamagnetic coefficient, and the polarizability are very important and cannot be neglected or ignored.

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Polaronic Effect on the Ground-State Energy of an Electron Bound to an Impurity in Spherical Quantum Dots

Cited by 11 publications

References 12 publications

Charge Carrier-Phonon Coupling in Cylindrical Quantum Dots

Charge Carrier-Phonon Coupling in Cylindrical Quantum Dots

Polaron Effect on the Binding Energy of Shallow Donor in Cylindrical Quantum Dot

Magnetic field effect on the polarizability of bound polarons in quantum nanocrystallites

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