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Updated: May 31, 2026
All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
Light-Induced Charge Order Mode in a Metastable Cuprate Ladder
Hari Padma1,2, Prakash Sharma3, Sophia F R TenHuisen1,4
1Harvard University, Department of Physics, Cambridge, Massachusetts, USA.
None:
We report the observation of an emergent charge order mode in the optically excited cuprate ladder Sr_{14}Cu_{24}O_{41}. 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.
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