Universal scaling of c-axis dc conductivity for the underdoped hightemperature cuprate superconductors

Tatsuya Honma, Pei-Herng Hor

Coexistence of the "metallic-like" in-plane and the "semiconducting-like" out-of-plane (caxis) dc conductivities (σc), generating a huge anisotropy in the underdoped hightemperatur…