The influence of room-temperature annealing on the parameters of the basal-plane electrical resistance of underdoped YBa2Cu3O7−δ and HoBa2Cu3O7−δ single crystals in the normal and superconducting states is investigated. The form of the derivatives dρ(T)/dT makes it possible to determine the onset temperature of the fluctuation conductivity and indicates a nonuniform distribution of the labile oxygen. Annealing has been revealed to lead to a monotonic decrease in the oxygen deficiency, that primarily manifests itself as a decrease of the residual resistance, an increase of Tc, and a decrease of the Debye temperature.
@article{arxiv.1901.06193,
title = {Annealing effects on the normal-state resistive properties of underdoped cuprates},
author = {R. V. Vovk and G. Ya. Khadzhai and Z. F. Nazyrov and S. N. Kamchatnaya and O. V. Dobrovolskiy},
journal= {arXiv preprint arXiv:1901.06193},
year = {2019}
}