Charge order dynamics in underdoped La$\mathbf{_{1.6-\textit{x}}}$Nd$\mathbf{_{0.4}}$Sr$\mathbf{{_\textit{x}}}$CuO$\mathbf{_{4}}$ revealed by electric pulses
The dynamics of the charge-order domains has been investigated in La1.48Nd0.4Sr0.12CuO4, a prototypical stripe-ordered cuprate, using pulsed current injection. We first identify the regime in which nonthermal effects dominate over simple Joule heating, and then demonstrate that, for small enough perturbation, pulsed current injection allows access to nonthermally-induced resistive metastable states. The results are consistent with pinning of the fluctuating charge order, with fluctuations being most pronounced at the charge-order onset temperature. The nonequilibrium effects are revealed only when the transition is approached from the charge-ordered phase. Our experiment establishes pulsed current injection as a viable and effective method for probing the charge-order dynamics in various other materials.
@article{arxiv.2106.01469,
title = {Charge order dynamics in underdoped La$\mathbf{_{1.6-\textit{x}}}$Nd$\mathbf{_{0.4}}$Sr$\mathbf{{_\textit{x}}}$CuO$\mathbf{_{4}}$ revealed by electric pulses},
author = {Bal K. Pokharel and Yuxin Wang and J. Jaroszynski and T. Sasagawa and Dragana Popović},
journal= {arXiv preprint arXiv:2106.01469},
year = {2021}
}
Comments
This article has been submitted to Applied Physics Letters. After it is published, it will be found at their website (see also https://publishing.aip.org/resources/librarians/products/journals/)