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Journal Article

Exciton recombination in one-dimensional organic Mott insulators

MPS-Authors
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Eckstein,  Martin
CFEL, 22761 Hamburg, Germany;
Theory of Correlated Systems out of Equilibrium, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

Fulltext (public)

PhysRevB.92.201104.pdf
(Publisher version), 176KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Lenarčič, Z., Eckstein, M., & Prelovšek, P. (2015). Exciton recombination in one-dimensional organic Mott insulators. Physical Review B, 92(20): 201104(R). doi:10.1103/PhysRevB.92.201104.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0029-0D52-E
Abstract
We present a theory for the recombination of (charged) holons and doublons in one-dimensional organic Mott insulators, which is responsible for the decay of the photoexcited state. Due to the charge-spin separation, the dominant mechanism for recombination at low density of charges involves a multiphonon emission. We show that a reasonable coupling to phonons is sufficient to explain the fast recombination observed by pump-probe experiments in ET−F2TCNQ, whereby we can also account for the measured pressure dependence of the recombination rate.