排序方式: 共有14条查询结果,搜索用时 31 毫秒
1.
2.
3.
4.
Prineas JP Shah J Grote B Ell C Khitrova G Gibbs HM Koch SW 《Physical review letters》2000,85(14):3041-3044
Resonance Rayleigh scattering by periodic semiconductor multiple quantum-well structures is studied experimentally and theoretically. Polaritonic effects are found to dominate disorder in the secondary emission dynamics. The coexistence of several radiant polaritonic modes with different radiative decay times leads to polarization beating between modes, strongly influences the rise times, and determines the fast decay times of the resonance Rayleigh scattered signals. 相似文献
5.
Chatterjee S Ell C Mosor S Khitrova G Gibbs HM Hoyer W Kira M Koch SW Prineas JP Stolz H 《Physical review letters》2004,92(6):067402
Time-resolved photoluminescence spectra after nonresonant excitation show a distinct 1s resonance, independent of the existence of bound excitons. A microscopic analysis identifies exciton and electron-hole plasma contributions. For low temperatures and low densities, the excitonic emission is extremely sensitive to details of the electron-hole-pair population making it possible to identify even minute fractions of optically active excitons. 相似文献
6.
Coherent Zeeman resonance from electron spin coherence is demonstrated in a Lambda-type three-level system, coupling electron spin states via trions. The optical control of electron density that is characteristic of a mixed-type quantum-well facilitates the study of trion formation as well as the effects of many-body interactions on the manifestation of electron spin coherence in the nonlinear optical response. 相似文献
7.
The structural and electronic transport properties of La1−x
Ce
x
MnO3 (x=0.0–1.0) have been studied. All the samples exhibit orthorhombic crystal symmetry and the unit cell volume decreases with
Ce doping. They also make a metal-insulator transition (MIT) and transition temperature increases with increase in Ce concentration
up to 50% doping. The system La0.5Ce0.5MnO3 also exhibits MIT instead of charge-ordered state as observed in the hole doped systems of the same composition. 相似文献
8.
Ell C Brick P Hübner M Lee ES Lyngnes O Prineas JP Khitrova G Gibbs HM Kira M Jahnke F Koch SW Deppe DG Huffaker DL 《Physical review letters》2000,85(25):5392-5395
The nonlinear optical response of semiconductor microcavities in the nonpertubative regime is studied in resonant single-beam-transmission and pump-probe experiments. In both cases a pronounced third transmission peak lying spectrally between the two normal modes is observed. A fully quantized theory is essential for the agreement with the experimental observations, demonstrating that quantum fluctuations leading to intraband polarizations are responsible for this effect. 相似文献
9.
10.
O. B. Gusev B. Ya. Ber M. S. Bresler B. P. Zakharchenya I. N. Yassievich G. Khitrova H. M. Gibbs D. P. Prineas E. K. Lindmark V. F. Masterov 《Physics of the Solid State》1999,41(3):484-488
Incorporation of erbium into GaAs/AlGaAs quantum-well structures in the course of their MBE growth has been shown experimentally
to initiate effective Ga and Al interdiffusion and Er diffusion due to the erbium-induced enhanced vacancy formation. A mechanism
for the formation of cation vacancies is proposed, which is based on the generation of local strains by the incorporating
erbium. It is shown that erbium interacts with aluminum to produce in AlGaAs aluminum-enriched, erbium-containing clusters.
Fiz. Tverd. Tela (St. Petersburg) 41, 540–544 (March 1999) 相似文献