Normal State Resistivity of Underdoped YBa₂Cu₃O_x Thin Films and La_2-xSr_xCuO₄ Ultra-Thin Films under Epitaxial Strain

The normal state resistivity of high temperature superconductors can be probed in the region below Tc by suppressing the superconducting state in high magnetic fields. Here we present the normal state properties of YBa2Cu3Ox thin films in the underdoped regime and the normal state resistance of Lu2.xSrxCuO4 thin films under epitaxial strain, measured below Tc by applying pulsed fields up to 60 T. We interpret these data in terms of the recently proposed ID quantum transport model with the 1D paths corresponding to the charge stripes.