Effects of electric and magnetic fields on confined donor states in a dielectric quantum well

Cen, Jianyong; Kk, Bajaj

doi:10.1103/physrevb.48.8061

Cited by 37 publications

(28 citation statements)

References 38 publications

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“…The problem of an off-center donor is more general and leads to a series of effects that do not exist in nanostructures with an impurity localized in the center [2,4,11,15]. Particularly in a strong confinement regime, a large spread of the ground-state level is expected as the donor position varies [11,14].…”

Section: Off-center Impuritymentioning

confidence: 96%

“…The effects of magnetic and electric fields on the intradonor transition energies between the 1s-like ground state and 2 p + -like excited state of hydrogenic donors in these structures were studied following a variational calculation within the effective-mass approximation [3]. Cen and Bajaj [4], on the other hand, have developed a method for the 'dielectric quantum well' in the presence of parallel electric and magnetic fields taking into account the interfacial dielectric constant mismatch. The Franz-Keldysh effect on Landau levels and magnetoexcitons in QWs with a strong dc electric field in the quantum-well plane and a crossed static magnetic field aligned with the growth direction has been investigated by Citrin and Hughes [5].…”

Section: Introductionmentioning

confidence: 99%

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1 s–2 p±transitions between hydrogenic states in GaAs low-dimensional systems under external fields

Niculescu

2001

Superlattices and Microstructures

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Section: Off-center Impuritymentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

1 s–2 p±transitions between hydrogenic states in GaAs low-dimensional systems under external fields

Niculescu

2001

Superlattices and Microstructures

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“…Bu eşitlik sayesinde ̃ özdeğerini minimum yapan varyasyon parametreleri belirlenir. 1s (m=0), 2s (m=0) ve 2 ± (m = ±1) durumunda bulunan safsızlık atomunun bağlanma enerjisi aşağıdaki denklem şeklinde verilir [21]. …”

Section: Teori̇unclassified

Parabolik Kuantum Kuyusundaki Hidrojenik Düzeyler Üzerine Manyetik Alan Etkisi

Yesilgül¹,

Çoban²,

Kasapoğlu³

2015

CFD

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Özet. Bu çalışmada, tek parabolik kuantum kuyusunda 1s, 2s ve 2p± düzeylerindeki donor safsızlık atomunun bağlanma enerjisi, etkin kütle yaklaşımında varyasyonel olarak, kuyu genişliği ve dışarıdan uygulanan manyetik alanın bir fonksiyonu olarak hesaplamıştır. Ayrıca, GaAs/Ga1-xAlxAs tek parabolik kuantum kuyusunda hidrojenik düzeyler arasındaki kızılötesi geçişler üzerinde manyetik alanın etkisi incelenmiştir.Anahtar Kelimeler: Parabolik kuantum kuyusu, Safsızlık bağlanma enerjisi, Manyetik alan Effect of Magnetic Field on Hydrogenic Energy Levels in Parabolic Quantum WellAbstract. In this study, the binding energy of the donor impurity at 1s, 2s and 2p± states in a parabolic quantum well is calculated variationally within the effective mass approximation as a function of the quantum well width and the external magnetic field. Furthermore, the effects of the magnetic field on the infrared transitions between the hydrogenic states in a parabolic quantum well under are investigated.

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“…The optical properties of correlated electrons in quantum dots within a strong magnetic field [11] and the effect of free carriers on photoluminescence from modulation-doped self-assembled quantum dots in a magnetic field [12] have been studied by Wojs and Hawrylak. Some authors [13,14] have investigated the effects of both electric and magnetic fields on the electronic states of shallow impurities in donor-doped GaAs-Ga 1--x Al x As QWs. The Franz-Keldysh effect on Landau levels and magnetoexcitons in quantum wells in the presence of a strong dc electric field in the quantum well plane and a crossed static magnetic field aligned with the growth direction have been recently calculated by Citrin and Hughes [15] accounting for the fields nonperturbatively.…”

Section: Introductionmentioning

confidence: 99%

Energy Levels in GaAs Low-Dimensional Systems: Effects of Electric and Magnetic Fields

Niculescu

2001

phys. stat. sol. (b)

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We investigate the electronic structure of cylindrical pills of GaAs low-dimensional systems, under the action of a magnetic field applied in the axial direction and an electric field with varying orientations. Effects of the competition between the magnetic radial confinement and the electric-fieldinduced polarization on the e1-hh1 transition energy are studied in detail. The results show that the energies of electron and hole states depend sensitively on the dot radius and the relative direction of the electric field to the magnetic field. These aspects must be taken into account in the understanding of optical phenomena related to the energy spectrum of carriers in the presence of external fields and the design of materials and devices in low-dimensional systems.

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Effects of electric and magnetic fields on confined donor states in a dielectric quantum well

Cited by 37 publications

References 38 publications

1 s–2 p±transitions between hydrogenic states in GaAs low-dimensional systems under external fields

1 s–2 p±transitions between hydrogenic states in GaAs low-dimensional systems under external fields

Parabolik Kuantum Kuyusundaki Hidrojenik Düzeyler Üzerine Manyetik Alan Etkisi

Energy Levels in GaAs Low-Dimensional Systems: Effects of Electric and Magnetic Fields

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