Doping effect on the anomalous behavior of the Hall effect in electron-doped superconductor Nd${}_{2-x}$Ce${}_x$CuO${}_{4+\delta }$

Abstract

Transport properties of Nd${}_{2-x}$Ce${}_x$CuO${}_{4+\delta }$ single crystal films are investigated in magnetic fields $B$ up to 9T at $T$=(0.4-4.2)K. An analysis of normal state (at $B>B_{c2}$) Hall coefficient $R_H$${}^n$ dependence on Ce doping takes us to a conclusion about the existence both of electron-like and hole-like contributions to transport in nominally electron-doped system. In accordance with $R_H$${}^n$(x) analysis an anomalous sign reversal of Hall effect in mixed state at $B<B_{c2}$ may be ascribed to a flux-flow regime for two types of carriers with opposite charges.

14 pages, 5 figures

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Cited by in corpus (4)

• Upper critical field in electron-doped cuprate superconductor Nd${}_{2-x}$Ce${}_x$CuO${}_{4+\delta }$: two-gap model
• Transport anomalies and quantum criticality in electron-doped cuprate superconductors
• Anisotropic temperature dependence of normal state resistivity in underdoped region of a layered electron-doped superconductor Nd2-xCexCuO4
• Resistivity tensor correlations in the mixed state of electron-doped superconductor Nd${}_{2-x}$Ce${}_x$CuO${}_{4+\delta }$