Gap Energies, Exciton Binding Energies and Band Offsets in Ternary ZnMgSe Compounds and ZnSe/ZnMgSe Heterostructures

Wörz, M.; Griebl, E.; Reisinger, T.; Flierl, R.; Haserer, B.; Semmler, T.; Frey, Thomas; Gebhardt, W.

doi:10.1002/1521-3951(199708)202:2<805::aid-pssb805>3.0.co;2-o

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͓S0163-1829͑98͒00503-7͔2

Sample Characterization and Experimental Details1

Introduction1

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Cited by 65 publications

(18 citation statements)

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“…13. A coherent excitation of these excitons leads to pronounced quantum beats ͑QB͒ described in Ref.…”

supporting

confidence: 58%

Interaction-induced effects in the nonlinear coherent response of quantum-well excitons

et al. 1999

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“…13. A coherent excitation of these excitons leads to pronounced quantum beats ͑QB͒ described in Ref.…”

supporting

confidence: 58%

Interaction-induced effects in the nonlinear coherent response of quantum-well excitons

et al. 1999

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“…The samples are of high optical and structural quality, as was examined by transmission, photoluminescence ͑PL͒, photoreflection spectroscopy, by high-resolution ͑HR͒ transmission electron microscopy, and HR x-ray diffraction. 38 Systematic PL studies on pseudomorphically grown Zn 1Ϫx Mg x Se/ZnSe SQW structures with different well widths and Mg contents yield a conduction-band offset parameter Q c ϭ0.13Ϯ0.1, 39 where Q c is defined as the ratio of the conduction-band offset to the total band offset in an unstrained situation. The strain shifts the band energies, leading to a strained Q c of approximately 0.3, so that the ZnSe/Zn 0.94 Mg 0.06 Se QW's show a type-I band alignment.…”

Section: Sample Characterization and Experimental Detailsmentioning

confidence: 95%

Interaction and dephasing of center-of-mass quantized excitons in wideZnSe/Zn0.94

et al. 1998

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. Interaction and dephasing of center-of-mass quantized excitons in wide ZnSe/Zn0.94Mg0.06Se quantum wells. Physical Review B, 57(3), 1791-1796. DOI: 10.1103/PhysRevB.57.1791 Interaction and dephasing of center-of-mass quantized excitons in wide ZnSe/Zn 0. We investigate the interaction and dephasing of the excitons in wide ZnSe/Zn 0.94 Mg 0.06 Se quantum wells by spectrally resolved, femtosecond four-wave mixing ͑FWM͒. Polarization-dependent measurements indicate that excitation-induced dephasing is the dominant FWM process. The biexcitons of the center-of-mass quantized heavy and light hole excitons are observed, showing binding energies of 3.5 meV. We determine the exciton scattering cross sections with incoherent and coherent excitons. The coherent cross section is found to be larger than the incoherent cross section, which is attributed to a stronger Pauli repulsion for coherent excitons. The exciton interaction rates with acoustic and optical phonons are deduced by their temperature dependencies. The acoustic-phonon scattering is found to be strongly reduced in the investigated wide wells due to the reduced accessible phonon wave vector. ͓S0163-1829͑98͒00803-0͔

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“…A detailed description of the growth and a sample characterization is given in Ref. 9. A frequency-doubled, mode-locked Ti-sapphire laser was used to excite the FWM, providing 100 fs pulses of a spectral width of 22 meV and a repetition rate of 76 MHz.…”

Section: ͓S0163-1829͑99͒01508-8͔mentioning

confidence: 99%

Mixed biexcitons in single quantum wells

1999

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Gap Energies, Exciton Binding Energies and Band Offsets in Ternary ZnMgSe Compounds and ZnSe/ZnMgSe Heterostructures

Cited by 65 publications

References 0 publications

Interaction-induced effects in the nonlinear coherent response of quantum-well excitons

Interaction-induced effects in the nonlinear coherent response of quantum-well excitons

Interaction and dephasing of center-of-mass quantized excitons in wideZnSe/Zn0.94

Mixed biexcitons in single quantum wells

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