  Recently, the normal state resistivity of high temperature superconductors
(in particular in La2-xSrxCuO4 single crystals) has been studied extensively in
the region below Tc by suppressing the superconducting state in high magnetic
fields. In the present work we report on the normal state resistance of
underdoped La2-xSrxCuO4 thin films under epitaxial strain, measured far below
Tc by applying pulsed fields up to 60 T. We will compare the transport
measurements on these high temperature superconductors with transport data
reported for the Sr2.5Ca11.5Cu24O41 spin ladder compound. This comparison leads
to an interpretation of the data in terms of the recently proposed 1D quantum
transport model and the charge-stripe models.
