Oscillator strength transfer from X to X+ in a CdTe quantum-well microcavity

被引：23

作者：

Brunhes, T ^{[1
]}

André, R ^{[1
]}

Arnoult, A ^{[1
]}

Cibert, J ^{[1
]}

Wasiela, A ^{[1
]}

机构：

[1] Univ Grenoble 1, Spectrometrie Phys Lab, CNRS, UMR 5588, F-38402 St Martin Dheres, France

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.60.11568

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on a study of oscillator strength transfer from the neutral exciton X to the positively charged exciton X+, in a modulation doped CdTe quantum well embedded in a microcavity. The strong-coupling regime between X or X+ and the cavity photon mode has been analyzed for various hole densities p and the oscillator strengths f(X) and f(X+) are derived accurately from polariton line energies. Far increasing p, f(X) increases and f(X), is shown to decrease linearly with f(X+). We propose a model that accounts far those oscillator strength variations. This model relies on an effective cross section SX+ = 6.6 X 10(4) Angstrom(2) for the creation of X+ in the vicinity of a hole, and a saturation density equal to 10(11) cm(-2) for phase-space filling effect, [S0163-1829(99)04539-7].

引用

页码：11568 / 11571

页数：4

共 20 条

[1] Spectroscopy of polaritons in CdTe-based microcavities [J].

Andre, R ;

Heger, D ;

Dang, LS ;

d'Aubigne, YM .

JOURNAL OF CRYSTAL GROWTH, 1998, 184 :758-762

[2]

Arnoult A, 1998, J CRYST GROWTH, V184, P445

[3] NITROGEN DOPING OF TELLURIUM-BASED II-VI COMPOUNDS DURING GROWTH BY MOLECULAR-BEAM EPITAXY [J].

BARON, T ;

SAMINADAYAR, K ;

MAGNEA, N .

APPLIED PHYSICS LETTERS, 1995, 67 (20) :2972-2974

[4] Trion and exciton dephasing measurements in modulation-doped quantum wells:: A probe for trion and carrier localization [J].

Brinkmann, D ;

Kudrna, J ;

Gilliot, P ;

Hönerlage, B ;

Arnoult, A ;

Cibert, J ;

Tatarenko, S .

PHYSICAL REVIEW B, 1999, 60 (07) :4474-4477

[5] ELECTRON-CONCENTRATION-DEPENDENT QUANTUM-WELL LUMINESCENCE - EVIDENCE FOR A NEGATIVELY CHARGED EXCITON [J].

BUHMANN, H ;

MANSOURI, L ;

WANG, J ;

BETON, PH ;

MORI, N ;

EAVES, L ;

HENINI, M ;

POTEMSKI, M .

PHYSICAL REVIEW B, 1995, 51 (12) :7969-7972

[6] OPTICAL SPECTROSCOPY OF A 2-DIMENSIONAL ELECTRON-GAS NEAR THE METAL-INSULATOR-TRANSITION [J].

FINKELSTEIN, G ;

SHTRIKMAN, H ;

BARJOSEPH, I .

PHYSICAL REVIEW LETTERS, 1995, 74 (06) :976-979

[7] Observation of charged X- and X+ excitons and metal-to-insulator transition in CdTe/CdMgZnTe modulation-doped quantum wells [J].

Haury, A ;

Arnoult, A ;

Chitta, VA ;

Cibert, J ;

D'Aubigne, YM ;

Tatarenko, S ;

Wasiela, A .

SUPERLATTICES AND MICROSTRUCTURES, 1998, 23 (05) :1097-1102

[8] OPTICALLY INDUCED DENSITY DEPLETION OF THE 2-DIMENSIONAL ELECTRON-SYSTEM IN GAAS/ALXGA1-XAS HETEROJUNCTIONS [J].

HAYNE, M ;

USHER, A ;

PLAUT, AS ;

PLOOG, K .

PHYSICAL REVIEW B, 1994, 50 (23) :17208-17216

[9] OBSERVATION OF NEGATIVELY CHARGED EXCITONS X- IN SEMICONDUCTOR QUANTUM-WELLS [J].

KHENG, K ;

COX, RT ;

DAUBIGNE, YM ;

BASSANI, F ;

SAMINADAYAR, K ;

TATARENKO, S .

PHYSICAL REVIEW LETTERS, 1993, 71 (11) :1752-1755

[10]

KOSSACKI P, IN PRESS PHYS REF B

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