%0 Journal Article %1 PhysRevLett.86.4620 %A Axt, V. M. %A Haase, B. %A Neukirch, U. %D 2001 %I American Physical Society %J Phys. Rev. Lett. %K imported %N 20 %P 4620--4623 %R 10.1103/PhysRevLett.86.4620 %T Influence of Two-Pair Continuum Correlations Following Resonant Excitation of Excitons %U http://prl.aps.org/abstract/PRL/v86/i20/p4620_1 %V 86 %X The memory structure induced by coherent transitions to the exciton-exciton scattering continuum is shown to have significant influence on spectrally resolved four-wave-mixing signals even under selective excitation of 1s excitons. Comparisons between experiments and calculations that account nonperturbatively for these quantum kinetic Coulomb correlations demonstrate large compensations between mean-field contributions and transitions to the two-pair continuum. Experiments with different polarizations of the laser pulses show that two-pair continuum correlations are responsible for delay-time dependent shifts of the excitonic emission as well as for substantial deformations of the line shape.

@article{PhysRevLett.86.4620, abstract = {The memory structure induced by coherent transitions to the exciton-exciton scattering continuum is shown to have significant influence on spectrally resolved four-wave-mixing signals even under selective excitation of 1s excitons. Comparisons between experiments and calculations that account nonperturbatively for these quantum kinetic Coulomb correlations demonstrate large compensations between mean-field contributions and transitions to the two-pair continuum. Experiments with different polarizations of the laser pulses show that two-pair continuum correlations are responsible for delay-time dependent shifts of the excitonic emission as well as for substantial deformations of the line shape.}, added-at = {2010-02-04T18:05:31.000+0100}, author = {Axt, V. M. and Haase, B. and Neukirch, U.}, biburl = {https://www.bibsonomy.org/bibtex/2309d7f4af364ee29cc30bc50523855ac/myrta}, description = {memory effects, femtosecond spectroscopy}, doi = {10.1103/PhysRevLett.86.4620}, interhash = {cf771dec98aeb29adc75f828ac351e29}, intrahash = {309d7f4af364ee29cc30bc50523855ac}, journal = {Phys. Rev. Lett.}, keywords = {imported}, month = May, number = 20, numpages = {3}, pages = {4620--4623}, publisher = {American Physical Society}, timestamp = {2010-02-04T18:05:32.000+0100}, title = {Influence of Two-Pair Continuum Correlations Following Resonant Excitation of Excitons}, url = {http://prl.aps.org/abstract/PRL/v86/i20/p4620_1}, volume = 86, year = 2001 }