J. Zhang, Levenson-Falk, E. M., Ramshaw, B. J., Bonn, D. A., Liang, R., Hardy, W. N., Hartnoll, S. A., and Kapitulnik, A.,
“Anomalous thermal diffusivity in underdoped YBa2Cu3O6+x”,
Proceedings of the National Academy of Sciences, vol. 114, no. 21, pp. 5378 - 5383, 2017.