The mixed-state Hall conductivity of single-crystal films Nd₂–xCexCuO₄₊δ (x = 0.14)

Abstract

The magnetic-field dependencies of the longitudinal and Hall resistivity of the electron-doped compounds Nd₂–xCexCuO₄₊δ in underdoped region (x = 0.14) were investigated. It was established experimentally a strong magnetic field dependence of the Hall conductivity, σxy(B) = C – b/B, in the region of magnetic fields corresponding to a transition from superconducting to resistive state. The observed feature can be explained with the sum of contributions of the quasiparticles and moving Abrikosov vortices into Hall effect in a mixed state of type-II superconductor.