Transport properties of rare earth doped La{sub 2-x}Sr{sub x}CuO{sub 4}

The authors present measurements of the resistivity, the thermopower, and the thermal conductivity of rare earth (RE) doped La{sub 2{minus}x}Sr{sub x}CuO{sub 4}. Pronounced anomalies occur at the low temperature structural phase transition showing that the electronic properties as well as the lattice dynamics depend strongly on small structural changes. The authors results indicate that a suppressed phonon heat transport is a characteristic feature of La{sub 2}CuO{sub 4} based superconductors. A possible relationship to the presence of stripe correlations of holes and spins in doped La{sub 2}CuO{sub 4} is discussed.