Lateral vortex motion in highly layered electron-doped superconductor Nd2−xCexCuO4

Abstract The carrier transport and the motion of a vortex system in the electron-doped high-temperature superconductors Nd 2 − x CexCuO4 in underdoped and optimally doped (x = 0.135, 0.145, 0.15) regions, in the area of the evolution from antiferromagnetic to superconducting order were investigated. To study the anisotropy of the transport properties of highly layered NdCeCuO system we have synthesized Nd 2 − x CexCuO 4 + δ /SrTiO3 epitaxial films of three types with different orientations of the c-axis and conductive CuO2 layers relative to the substrate. Such a set of samples allowed us to study the processes of both standard (in the CuO2 layers) and lateral (across the CuO2 layers) carrier transfer in the normal and the mixed states of a superconductor. In a flux-flow regime, in magnetic field B , the dynamics of Abrikosov ( B ∥ c-axis) and Josephson ( B ∥ ab-plane) vortices are thoroughly investigated and analyzed which is perspective for scientific purposes and for practical applications in measurement technology.