Comparison of the transport mechanism in underdoped high-temperature superconductors and in spin ladders

The normal state resistance of underdoped La2-xSrxCuO4 thin films under epitaxial strain was measured far below Tc by applying pulsed fields up to 60 T. Comparison of the transport measurements on these high-temperature superconductors (HTSC) with transport data reported for the Sr2.5Ca11.5Cu24O41 spin ladder compound led to an interpretation of the data in terms of the recently proposed 1D quantum transport model and the charge-stripe models.