Excitonic n-string in linear chains

The bound states of n Frenkel excitons ( n = 2,3,…), which are called excitonic n-strings, are theoretically shown to exist in contrast with a system of Wannier excitons. The electronic structure and nonlinear optical responses of these excitonic n-strings are clarified. The first evidence for the e...

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Bibliographic Details
Published in:Solid state communications 1993-10, Vol.88 (3), p.211-216
Main Authors: Ezaki, H., Tokihiro, T., Kuwata-Gonokami, M., Shimano, R., Ema, K., Hanamura, E., Fluegel, B., Meissner, K., Mazumdar, S., Peyghambarian, N.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron states
Exact sciences and technology
Excitons and related phenomena
Physics
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Summary:The bound states of n Frenkel excitons ( n = 2,3,…), which are called excitonic n-strings, are theoretically shown to exist in contrast with a system of Wannier excitons. The electronic structure and nonlinear optical responses of these excitonic n-strings are clarified. The first evidence for the excitonic 2- and 3-strings is provided from comparison of the calculated and observed differential transmission spectrum of an Anthracene-PMDA crystal pumped by femtosecond laser pulses.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(93)90744-8