González Herrera, Elvira MaríaGonzález Casado, J.M.Vicent López, José Luis2023-06-202023-06-202000-10-011098-012110.1103/PhysRevB.62.8707https://hdl.handle.net/20.500.14352/60178©2000 The American Physical Society. The authors want to thank I. K. Schuller, F. de la Cruz and G. Crabtree for useful conversations. This work has been supported by Spanish CICYT (MAT99-724).a-axis oriented (CuO_2 planes perpendicular to the substrate) films and superlattices grown on cubic substrates show a structure with 90° microdomains. The microdomains are grains with a 90° rotation of the c axis. In the vortex liquid region, this microstructure induces a change from the usual three-dimensional (3D) behavior of the anisotropy toward a 2D behavior, in a temperature range above the usual crossover from 2D to 3D. Moreover, when the thickness of the superconducting part of the multilayers becomes smaller (or of the same order as) than the microdomain size the 3D dimensional anisotropy behavior is recovered.engjournal articlehttp://dx.doi.org/10.1103/PhysRevB.62.8707https://journals.aps.orgopen access538.9Oriented YBa_2Cu_3O_7/PrBa_2Cu_3O_7 superlatticesHigh-temperature superconductorsA-Axis YBa_2Cu_3O_7Transport-propertiesAnisotropyFísica de materialesFísica del estado sólido2211 Física del Estado Sólido