High-Temperature Superconductors

2

Transport properties of high-T_c cuprate thin films as superconductive materials

J. Vanacken and V.V. Moshchalkov,     Leuven Catholic University, Belgium

Abstract:

In this chapter, the systematic evolution with doping of the normal state properties (resistivity and Hall effect) of the La_2 − xSr_xCuO₄ thin film cuprates is analyzed. This analysis reveals convincing evidence in favor of the presence of the charge-rich 1D features (stripes), which eventually determine the 1D character of the transport properties at temperatures below the so-called ‘spin-gap’ temperature T*(x). Measurements of the fluctuation conductivity show how stripe coupling close to T_c recovers the 2D character of the Cu-O planes which is responsible for the 2D Aslamasov–Larkin ...