Long-lived photoinduced response observed under extreme photoexcitation densities in a one-dimensional Peierls insulator

One-dimensional metal-halide compounds provide model systems to investigate the manner in which coupling between elementary degrees of freedom-here, electronic and vibrational-result in instabilities that give rise to both chemical and structural rearrangements. Here, we employ “single-shot” pump-pr...

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Bibliographic Details
Published in:Physical review. B 2018-08, Vol.98 (5), p.054111
Main Authors: Wolfson, Johanna W, Teitelbaum, Samuel W, Shin, Taeho, Katayama, Ikufumi, Kawano, Taro, Takeda, Jun, Nelson, Keith A
Format: Article
Language:English
Subjects:
Coupling (molecular)
Equilibrium conditions
Organic chemistry
Photoexcitation
Platinum
Online Access:Get full text
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Summary:One-dimensional metal-halide compounds provide model systems to investigate the manner in which coupling between elementary degrees of freedom-here, electronic and vibrational-result in instabilities that give rise to both chemical and structural rearrangements. Here, we employ “single-shot” pump-probe spectroscopy to examine a one-dimensional platinum iodide compound (PtI(en)) under far-from-equilibrium conditions where repeated photoexcitation results in sample damage. It presents evidence for a distinct collective excited state lasting more than 100 ps upon self-trapped exciton generation at high densities, as measured by electronic signal amplitudes and phonon properties.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.98.054111