Vortex motion in tilted magnetic fields in highly layered electron-doped superconductor Nd2-xCexCuO4

TL;DR

This study investigates vortex motion and anisotropic transport properties in highly layered electron-doped superconductor Nd2-xCexCuO4 under tilted magnetic fields, revealing the dominant role of Lorentz force in vortex dynamics.

Contribution

It introduces epitaxial Nd2-xCexCuO4/SrTiO3 films with non-standard orientations to explore anisotropic vortex behavior in electron-doped high-temperature superconductors.

Findings

Resistivity behavior is mainly influenced by the perpendicular magnetic field component.

Lorentz force governs Josephson vortex motion across CuO2 layers.

Anisotropic effects depend on the magnetic field inclination angle.

Abstract

The carrier transport and the motion of a vortex system in a mixed state of an electron-doped high-temperature superconductors Nd2-xCexCuO4 were investigated. To study the anisotropy of galvanomagnetic effects of highly layered NdCeCuO system we have synthesized Nd2-xCexCuO4/SrTiO3 epitaxial films with non-standart orientations of the c-axis and conductive CuO2 layers relative to the substrate. The variation ofe the angle of inclination of the magnetic field B, relative to the current J, reveals that the behavior of both the in-plane r_xx(B) and the out-plane r_xy(B) resistivities in the mixed state is mainly determined by the perpendicular to J component of B, that indicates the crucial role of the Lorentz force F_L~[JxB] and defines the motion of Josephson vortices across the CuO2 layers.