Magnetoresistance and Hall effect in e-doped superconducting SrLaCuO thin films

Abstract

We have epitaxially grown c-axis oriented SrxLa1-xCuO2 thin films by rf sputtering on KTaO3 substrates with x = 0.12. The as-grown deposits are insulating and a series of superconducting films with various Tc(R=0) up to 26 K have been obtained by in-situ oxygen reduction. Transport measurements in the ab plane of these samples have been undertaken. We report original results on the temperature dependence of the Hall effect and on the anisotropic magnetoresistance (T > Tc). We discuss the magnitude of upper critical fields and anisotropy, the Hall effect, which presents changes of sign indicative of the existence of two types of carriers, the normal state magnetoresistance, negative in parallel magnetic field, a possible signature of spin scattering. These properties are compared to those of hole-doped cuprates, such as BiSr(La)CuO with comparable Tc.

4 pages, 4 figures; to appear in Proceedings of LT25, Journal of Physics : Conference Series

References in corpus (4)

• Origin of the anomalous low temperature upturn in resistivity in the electron-doped cuprates
• Dimensionality of superconductivity in the infinite-layer high-temperature cuprate Sr0.9M0.1CuO2 (M = La, Gd)
• Influence of Disorder on the Hall Effect in Bi${}_2$Sr${}_2$CuO${}_{6+\delta }$
• Upper critical field from normal state fluctuations in Bi${}_2$Sr${}_2$CuO${}_{6+\delta }$

Cited by in corpus (4)

• Anisotropy of the in-plane angular magnetoresistance of electron-doed Sr1-xLaxCuO2 thin films
• High magnetic field evolution of the in-plane angular magnetoresistance of electron-doped Sr1-xLaxCuO2 in the normal state
• Penetration depth of electron-doped-infinite-layer Sr${}_{0.88}$La${}_{0.12}$CuO${}_{2+x}$ thin films
• Electric--field effect on electron-doped infinite-layer Sr${}_{0.88}$La${}_{0.12}$CuO${}_{2+x}$ thin films