Quantum mechanical repulsion of exciton levels in a disordered quantum well -: art. no. 076801
Quantum mechanical repulsion of exciton levels in a disordered quantum well -: art. no. 076801
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DOI：
10.1103/physrevlett.87.076801
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发表时间：
2001-08-13
影响因子：
8.6
通讯作者：
Ploog, KH
中科院分区：
文献类型：
--
作者：
Intonti, F;Emiliani, V;Ploog, KH
用近场光谱方法记录了单量子阱的空间分辨光致发光光谱。对显示局域激子尖锐发射线的400多个光谱进行了两能自相关函数的统计分析。与二维空间关联无序势中激子质心运动的量子理论的精确比较，揭示了量子力学能级排斥的明显特征，给出了无序量子系统中激子的空间和能量关联。
Spatially resolved photoluminescence spectra of a single quantum well are recorded by near-field spectroscopy. A set of over four hundred spectra displaying sharp emission lines from localized excitons is subject to a statistical analysis of the two-energy autocorrelation function. An accurate comparison with a quantum theory of the exciton center-of-mass motion in a two-dimensional spatially correlated disordered potential reveals clear signatures of quantum mechanical energy level repulsion, giving the spatial and energetic correlations of excitons in disordered quantum systems.