What question did this study set out to answer?

To investigate the behavior, propagation dynamics, and dispersion relations of surface polaritons on crystalline anthracene across different temperatures.

April 1, 1977The Journal of Chemical Physics

Surface polaritons on molecular crystals: An experimental study of anthracene

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Authors

KTK. TomiokaJohns Hopkins University MSMark G. SceatsUniversity of Technology Sydney SRStuart A. RiceUniversity of Chicago

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Implication

Experimental study reveals coherent surface polariton propagation in crystalline anthracene below 100 K, indicating that thermal phonon scattering disrupts surface excitation coherence.

Key Points

To investigate the behavior, propagation dynamics, and dispersion relations of surface polaritons on crystalline anthracene across different temperatures.
Used attenuated total reflection spectroscopy to probe polariton modes along the b axis on the (ab) face of crystalline anthracene.
Evaluated polariton coherence, dephasing times, and mode structures from low temperatures (down to 16 K) up to temperatures above 100 K.
Surface polaritons below 100 K form well-defined excitations along the b axis, exhibiting an estimated dephasing time of 0.1 psec and coherent propagation up to 2 μm at 16 K.
Higher temperatures eliminate well-defined surface polariton modes via scattering by lattice phonons.
Identified a 391 cm⁻¹ vibronic dipolar surface polariton at low temperatures, a two-particle scattering resonance, and three distinct nonradiative polariton modes below the exciton origin in thin crystals.

Cite This Study

Tomioka et al. (1977) studied this question.

synapsesocial.com/papers/6a8fee66e73a4c404fc90c8e https://doi.org/10.1063/1.434366

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Implication

Experimental study reveals coherent surface polariton propagation in crystalline anthracene below 100 K, indicating that thermal phonon scattering disrupts surface excitation coherence.

Surface polaritons on molecular crystals: An experimental study of anthracene

Discussion

Member takes

Implication

Key Points

Cite This Study

Surface polaritons on molecular crystals: An experimental study of anthracene

Discussion

Member takes

Implication

Key Points

Cite This Study

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