# Transient terahertz photoconductivity of insulating cuprates

Source: [Transient terahertz photoconductivity of insulating cuprates](<https://www.sota2.com/research/paper/68fa36721e209131ce8a9ede>)

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

Data updated: 2025-10-24T21:50:14.945Z

Authors: J. C. Petersen, A. Farahani, D. G. Sahota, Ruixing Liang, J. S. Dodge

Published: 2016-10-31T19:47:34.000Z

## Abstract

We establish a detailed phenomenology of photocarrier transport in the copper oxide plane by studying the transient terahertz photoconductivity of Sr$\_2$CuO$\_2$Cl$\_2$ and YBa$\_2$Cu$\_3$O$\_6$. The peak photoconductivity saturates with fluence, decays on multiple picosecond timescales, and evolves into a state characterized by activated transport. The time dependence shows little change with fluence, indicating that the decay is governed by first-order recombination kinetics. We find that most photocarriers make a negligible contribution to the dc photoconductivity, and we estimate the intrinsic photocarrier mobility to be 0.6-0.7 cm$^2$/V s at early times, comparable to the mobility in chemically doped materials.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1610.10091>)

[PDF](<https://arxiv.org/pdf/1610.10091.pdf>)