Optical signatures of energy-level statistics in a disordered quantum system
Time-resolved measurements of the resonant Rayleigh scattering from quantum well excitons are shown to provide information on the energy-level statistics of the localized exciton states. The signal transients are reproduced by a microscopic quantum model of the exciton two-dimensional motion in presence of spatially correlated disorder. This model allows quantitative determination of the average energy separation between the localized states. Here this quantity turns out to be only a few times smaller than the average disorder amplitude, proving that spatial correlation and quantum mechanics are equally important in the description of the exciton localization process.
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Savona, V., Haacke, S., & Deveaud, B. (2000). Optical signatures of energy-level statistics in a disordered quantum system. Physical Review Letters, 84(1), 183–186. https://doi.org/10.1103/PhysRevLett.84.183
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WOS:000084587900046
2000
84
1
183
186
Swiss Fed Inst Technol, Dept Phys, CH-1015 Lausanne, Switzerland. Savona, V, Swiss Fed Inst Technol, Dept Phys, CH-1015 Lausanne, Switzerland.
ISI Document Delivery No.: 271HJ
Cited Reference Count: 32
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