Comparison of the Transport Mechanism in Underdoped High Temperature Superconductors and in Spin Ladders
J. Vanacken, L. Trappeniers, G. Teniers, P. Wagner, K. Rosseel, J. Perret, J. -P. Locquet, V. V. Moshchalkov, Y. Bruynseraede
Abstract
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.
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