Spatial propagation of high-density excitons localized at a stacking disorder plane in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">BiI</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

Kondo, Hisao; Mino, H.; Akai, Ichiro; Karasawa, T.

doi:10.1103/physrevb.58.13835

Cited by 20 publications

(6 citation statements)

References 37 publications

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“…This propagation of carriers and excitons has been observed experimentally. [25][26][27] Therefore, in our next publication, information regarding the spatial distribution of carriers will be included and we will construct a theoretical formulation in which photoluminescence dynamics are resolved spatiotemporally. …”

Section: Discussionmentioning

confidence: 99%

Carrier Dynamics in a Quantum Wire: Effects of Microscopic Scattering Processes on Intraband Relaxation and Optical Properties

Ishikawa

Ogawa

2010

J. Phys. Soc. Jpn.

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We study the effects of microscopic scattering processes, such as carrier-LA phonon scattering and carrier-carrier Coulomb scattering, on the intraband relaxation dynamics and optical properties of the electron-hole system of a quantum wire. We assume a low excitation density and a low carrier density. In this case, carrier-LA phonon scattering and carrier-carrier Coulomb scattering are both important for relaxation dynamics. Relaxation dynamics are investigated using a full-quantum-mechanical formulation, which is based on semiconductor luminescence equations and a projection-operator theory. In this paper, the time-resolved photoluminescence dynamics can be calculated because the light field is quantized. We reveal the connection between the microscopic scattering and macroscopic relaxation processes. Furthermore, although the microscopic motion of carriers cannot be observed directly in experiments, we can estimate such motion by time-resolved optical spectroscopy.

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Section: Discussionmentioning

confidence: 99%

Carrier Dynamics in a Quantum Wire: Effects of Microscopic Scattering Processes on Intraband Relaxation and Optical Properties

Ishikawa

Ogawa

2010

J. Phys. Soc. Jpn.

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“…Recent developments in experimental techniques make it possible to observe remarkable phenomena suggesting the generation of the macroscopic quantum states in semiconductors. The fast and coherent propagation of excitons observed in Cu 2 O (Fortin and Mysyrowicz, 1993;Mysyrowicz and Fortin, 1996) and BiI 3 (Kondo et al, 1998) is particularly interesting because the effect is more pronounced with increasing exciton density. This point is in a marked contrast with the simple ballistic exciton propagation or the conventional exciton diffusion.…”

Section: Introductionmentioning

confidence: 95%

Macroscopic Quantum State in Optically Driven Semiconductors: Crossover from Electron-Hole BCS to Exciton Bose Condensation

Inagaki¹,

Aihara²

2002

Phase Transitions

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Luminescence spectra from high-density electron-hole (e-h) systems at zero temperature are studied. The calculated spectra clearly show the crossover between the e-h BCS state and the exciton Bose-Einstein condensate; this behavior analyzed neither with the BCS-like mean-field theory nor with the interacting Boson model. The strong phase fluctuation associated with the center-of-mass motion of e-h pairs is considered with the generalized random phase approximation combined with the Bethe-Salpeter equation for e-h pairs. The calculated spectra show that the broad spectral components from the e-h BCS state splits into P-and P 2 -lines with decreasing e-h density. The calculated density dependence of the band-gap renormalization excellently agrees with experiments for CuCl and ZnO.

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“…Here, ϕ c is the coherent phase of the condensate. Indeed, the experimental results [2], [3] suggest the following decomposition of the density of excitons in the packet,…”

Section: Introductionmentioning

confidence: 99%

“…This article is motivated by experimental data on the transport properties of excitons in 3D crystals, such as Cu 2 0 [2], and 2D sheets in BiI 3 [3]. It is important to "cook" the following initial conditions: a relatively dense cloud of excitons with the density of n x > n c (T ) (e.g., n c (T = 2 K) ≈ 8.7 × 10 16 cm −3 ) to be in a moving state with h k x = 0.…”

Section: Introductionmentioning

confidence: 99%

Exciton-phonon droplets with Bose-Einstein condensate: transport and optical properties

Roubtsov¹,

Lépine²,

Loutsenko³

2001

Springer Proceedings in Physics

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Spatial propagation of high-density excitons localized at a stacking disorder plane inBiI3

Cited by 20 publications

References 37 publications

Carrier Dynamics in a Quantum Wire: Effects of Microscopic Scattering Processes on Intraband Relaxation and Optical Properties

Carrier Dynamics in a Quantum Wire: Effects of Microscopic Scattering Processes on Intraband Relaxation and Optical Properties

Macroscopic Quantum State in Optically Driven Semiconductors: Crossover from Electron-Hole BCS to Exciton Bose Condensation

Exciton-phonon droplets with Bose-Einstein condensate: transport and optical properties

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