Exciton in a quantum wire in the presence of parallel and perpendicular magnetic fields

Sidor, Y.; Partoens, B.; Peeters, F. M.

doi:10.1103/physrevb.71.165323

Cited by 42 publications

(38 citation statements)

References 33 publications

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“…4. We identify the crystallographic axes ͓110͔, ͓001͔, and ͓110͔ of the InAs/ InP self-assembled QWR 4,15,16 with the x, y, and z axes of the wire, and the z axis of the QW with the growth direction of the well ͑see Fig. 1͒.…”

Section: Theoretical Modelmentioning

confidence: 99%

“…In our previous work on InAs/ InP self-assembled QWR, 4 we presented the basic equations of the QWR in the presence of parallel and perpendicular magnetic fields. In the present work, we ex-tend that work to QW in the presence of parallel and perpendicular magnetic fields and when a local well width fluctuation is present.…”

Section: Theoretical Modelmentioning

confidence: 99%

“…The input parameters used in our simulations for the InAs/ InP material are taken from Ref. 4, except for the nonparabolicity parameter ␣.…”

Section: ͑7͒mentioning

confidence: 99%

“…4. An exciton in a quantum well ͑QW͒ in the presence of an external magnetic field has been intensively studied over the past decades.…”

Section: Introductionmentioning

confidence: 99%

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Exciton confinement inInAs∕InPquantum wires and quantum wells in the presence of a magnetic field

et al. 2007

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The charge confinement in InAs/ InP based quantum wells and self-assembled quantum wires is investigated theoretically and experimentally through the study of the exciton diamagnetic shift. The numerical calculations are performed within the single-band effective mass approximation, including band nonparabolicity and strain effects. The exciton diamagnetic shift is obtained for quantum wires and quantum wells incorporating local width fluctuations, as well as the electron-hole Coulomb interaction energy. Both electrons and holes ͑but to a lesser extent͒ show a substantial penetration into the InP barrier. A detailed comparison is made between the theoretical and experimental data on the magnetic field dependence of the exciton diamagnetic shift. Our theoretical analysis shows that excitons in the InAs/ InP quantum well are trapped by local well width fluctuations.

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Section: Theoretical Modelmentioning

confidence: 99%

Section: Theoretical Modelmentioning

confidence: 99%

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Exciton confinement inInAs∕InPquantum wires and quantum wells in the presence of a magnetic field

et al. 2007

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“…In the last 40 to 45 years, modern growth technique like molecular beam epitaxy, chemical vapour deposition of metal, organic chemical vapour deposition and advanced lithography technique have made the realization of high quality semiconductor hetrostructure possible [1][2][3][4][5] . The peculiar optical and electronic properties of nanometric systems with quantum confined electronic states are probably uses in devices.…”

Section: Introductionmentioning

confidence: 99%

An evaluation of exciton diamagnetic shift as a function of magnetic field for InAs/InP and self-assembled quantum wires and evaluation of electron energy levels of quantum wire in a transverse magnetic field

2017

JCBSC

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Using the theoretical formalism of Y. Sidor et al.[Phys. Rev. B76, 195320(2007)], we have theoretically studied the exciton confinement in InAs/InP quantum wells(QW) and quantum wires(QWR) in the presence of magnetic field. We have evaluated the exciton diamagnetic shift E  (meV) for QW along z-direction and QWR along 110 in the presence of magnetic field both with wire height and well width. Our theoretically evaluated results show that E  increase with magnetic field B(T) for decreasing well width and wire height. Our results also show that E  evaluated taking parabolic mass is larger than without parabolic mass. In other calculation, our evaluated results for the radii of electron 0.15a . We also observed that E1 (meV)>>E0 (meV) for electron for elliptical QWR. These results confirm that the effect of the magnetic field on the energy of the electron becomes strong as the size of the wire increases. Our theoretically evaluated results are in good agreement with the other theoretical workers. These studies are very important in the sense that the self-assembled InAs/InP QWR and QD (quantum dot) are promising candidates for optical application at the telecommunication wavelength of 1.3 and 1.55  m because of the enhanced charge confinement.Keywords: Exciton confinement, exciton diamagnetic shift, effect of band nonparabolicity, parabolic electron mass, Vacuum electron mass, Photoluminscence spectra, Finite elliptical quantum wire, effective mass approximation, hydrostatic deformed potential, effective electron Rydberg, unstrained conduction band offset, confluent hypergeometric function.

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Spectrum of Exciton in a Quantum Wire

et al. 2009

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Exciton in a quantum wire in the presence of parallel and perpendicular magnetic fields

Cited by 42 publications

References 33 publications

Exciton confinement inInAs∕InPquantum wires and quantum wells in the presence of a magnetic field

Exciton confinement inInAs∕InPquantum wires and quantum wells in the presence of a magnetic field

An evaluation of exciton diamagnetic shift as a function of magnetic field for InAs/InP and self-assembled quantum wires and evaluation of electron energy levels of quantum wire in a transverse magnetic field

Spectrum of Exciton in a Quantum Wire

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