Light-Induced Charge Order Mode in a Metastable Cuprate Ladder
Hari Padma, Prakash Sharma, Sophia F. R. TenHuisen, Filippo Glerean, Antoine Roll, Pan Zhou, Sarbajaya Kundu, Arnau Romaguera, Elizabeth Skoropata, Hiroki Ueda, Biaolong Liu, Eugenio Paris, Yu Wang, Seng Huat Lee, Zhiqiang Mao, Mark P. M. Dean, Edwin W. Huang, Elia Razzoli, Yao Wang, Matteo Mitrano
DOI 10.1103/wdcf-jly6 · Physical Review Letters
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Abstract
We report the observation of an emergent charge order mode in the optically excited cuprate ladder Sr14Cu24O41. Near-infrared light in the ladder plane drives a symmetry-protected electronic metastable state together with a partial melting of the equilibrium charge order. Our time-resolved resonant inelastic x-ray scattering measurements at the upper Hubbard band reveal a collective excitation dispersing from the charge order wave vector up to 0.8 eV with a slope on the order of the quasiparticle velocity. These findings reveal a regime where correlated carriers acquire itinerant character at finite momentum, and charge order becomes dynamically fluctuating, offering a platform to explore light-induced pairing instabilities.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr14Cu24O41 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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