Exciton-light coupling in (In,Ga)As/GaAs quantum wells in a longitudinal magnetic field

P. S. Grigoryev, I. V. Ignatiev, V. G. Davydov, Yu P. Efimov, S. A. Eliseev, V. A. Lovtcius, P. Yu Shapochkin, M. Bayer

Research output

2 Citations (Scopus)
10 Downloads (Pure)

Abstract

We report on the observation of a significant increase of the radiative decay rates for exciton transitions in a wide (In,Ga)As/GaAs quantum well (L=95 nm) in magnetic fields up to 6 T applied along the growth axis of the heterostructure. The absolute values of the radiative decay rates are obtained from a quantitative analysis of resonant features in the experimentally measured reflectance spectra in the range of the optical transitions to the quantum-confined exciton states. High crystalline quality of the heterostructure allows us to observe the ground and several excited exciton transitions with the nonradiative broadening comparable to the radiative one. We employ a numerical procedure appropriate for the studied wide quantum well to model the increase of the radiative decay rate in magnetic field. The results of the modeling agree well with the experimental data.

Original languageEnglish
Article number155404
Pages (from-to)1-9
Number of pages9
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume96
Issue number15
DOIs
Publication statusPublished - 3 Oct 2017

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Excitons
Semiconductor quantum wells
decay rates
excitons
quantum wells
Magnetic fields
Electron transitions
Heterojunctions
magnetic fields
Optical transitions
optical transition
quantitative analysis
Crystalline materials
reflectance
Chemical analysis
LDS 751
gallium arsenide

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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title = "Exciton-light coupling in (In,Ga)As/GaAs quantum wells in a longitudinal magnetic field",
abstract = "We report on the observation of a significant increase of the radiative decay rates for exciton transitions in a wide (In,Ga)As/GaAs quantum well (L=95 nm) in magnetic fields up to 6 T applied along the growth axis of the heterostructure. The absolute values of the radiative decay rates are obtained from a quantitative analysis of resonant features in the experimentally measured reflectance spectra in the range of the optical transitions to the quantum-confined exciton states. High crystalline quality of the heterostructure allows us to observe the ground and several excited exciton transitions with the nonradiative broadening comparable to the radiative one. We employ a numerical procedure appropriate for the studied wide quantum well to model the increase of the radiative decay rate in magnetic field. The results of the modeling agree well with the experimental data.",
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Exciton-light coupling in (In,Ga)As/GaAs quantum wells in a longitudinal magnetic field. / Grigoryev, P. S.; Ignatiev, I. V.; Davydov, V. G.; Efimov, Yu P.; Eliseev, S. A.; Lovtcius, V. A.; Shapochkin, P. Yu; Bayer, M.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 96, No. 15, 155404, 03.10.2017, p. 1-9.

Research output

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T1 - Exciton-light coupling in (In,Ga)As/GaAs quantum wells in a longitudinal magnetic field

AU - Grigoryev, P. S.

AU - Ignatiev, I. V.

AU - Davydov, V. G.

AU - Efimov, Yu P.

AU - Eliseev, S. A.

AU - Lovtcius, V. A.

AU - Shapochkin, P. Yu

AU - Bayer, M.

N1 - 53 ссылки

PY - 2017/10/3

Y1 - 2017/10/3

N2 - We report on the observation of a significant increase of the radiative decay rates for exciton transitions in a wide (In,Ga)As/GaAs quantum well (L=95 nm) in magnetic fields up to 6 T applied along the growth axis of the heterostructure. The absolute values of the radiative decay rates are obtained from a quantitative analysis of resonant features in the experimentally measured reflectance spectra in the range of the optical transitions to the quantum-confined exciton states. High crystalline quality of the heterostructure allows us to observe the ground and several excited exciton transitions with the nonradiative broadening comparable to the radiative one. We employ a numerical procedure appropriate for the studied wide quantum well to model the increase of the radiative decay rate in magnetic field. The results of the modeling agree well with the experimental data.

AB - We report on the observation of a significant increase of the radiative decay rates for exciton transitions in a wide (In,Ga)As/GaAs quantum well (L=95 nm) in magnetic fields up to 6 T applied along the growth axis of the heterostructure. The absolute values of the radiative decay rates are obtained from a quantitative analysis of resonant features in the experimentally measured reflectance spectra in the range of the optical transitions to the quantum-confined exciton states. High crystalline quality of the heterostructure allows us to observe the ground and several excited exciton transitions with the nonradiative broadening comparable to the radiative one. We employ a numerical procedure appropriate for the studied wide quantum well to model the increase of the radiative decay rate in magnetic field. The results of the modeling agree well with the experimental data.

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