# Many-body recombination in insulating cuprates

Source: [Many-body recombination in insulating cuprates](<https://www.sota2.com/research/paper/68fa3b2e1e209131ce8d0cf2>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T00:27:57.188Z

Authors: Derek G. Sahota, Ruixing Liang, M. Dion, Patrick Fournier, Hanna A. D\\k{a}bkowska, Graeme M. Luke, J. Steven Dodge

Published: 2019-12-03T18:58:06.000Z

## Abstract

We study the pump-probe response of three insulating cuprates and develop a model for its recombination kinetics. The dependence on time, fluence, and both pump and probe photon energies imply many-body recombination on femtosecond timescales, characterized by anomalously large trapping and Auger coefficients. The fluence dependence follows a universal form that includes a characteristic volume scale, which we associate with the holon-doublon excitation efficiency. This volume varies strongly with pump photon energy and peaks near twice the charge-transfer energy, suggesting that the variation is caused by carrier multiplication through impact ionization.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1912.01604>)

[PDF](<https://arxiv.org/pdf/1912.01604.pdf>)