Growth and electrochemical oxidation of MBE-grown c-axis La2CuO4 thin films on different substrates

Daridon, A; Siegenthaler, H; Arrouy, F; Williams, EJ; Machler, E; Locquet, Jean-Pierre

Growth and electrochemical oxidation of MBE-grown c-axis La2CuO4 thin films on different substrates

Author:

Daridon, A

Siegenthaler, H ; Arrouy, F ; Williams, EJ ; Machler, E ; Locquet, Jean-Pierre

Keywords:

thin films, substrates, TEMPERATURE, SUPERCONDUCTIVITY, 0204 Condensed Matter Physics, 0912 Materials Engineering, 0914 Resources Engineering and Extractive Metallurgy, Materials, 4016 Materials engineering, 5104 Condensed matter physics

Abstract:

The growth and subsequent electrochemical oxygen intercalation of c-axis Ln(2)CuO(4+delta) thin films on substrates with different lattice mismatch [SrTiO3 (001) (+3.03%), NdGaO3 (001) (+1.90%), LaAlO3 (001) (-0.05%) and SrLaAlO4 (001) (-0.95%) substrates] are compared. The films grown on the different substrates can all be oxidized electrochemically,, but their structural and transport properties differ vastly. The results can roughly be divided into two categories, i.e,, those of films grown with a compressive or a tensile lattice mismatch where the former have a larger c-asis lattice parameter and better transport properties.