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arXiv · 1109.6399

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

T. B. Charikova·N. G. Shelushinina·G. I. Harus·D. S. Petukhov·A. V. Korolev·V. N. Neverov·A. A. Ivanov
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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.

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T. B. Charikova, N. G. Shelushinina, G. I. Harus, D. S. Petukhov, A. V. Korolev, V. N. Neverov, A. A. Ivanov. 2011-09-29. Doping effect on the anomalous behavior of the Hall effect in electron-doped superconductor Nd$_{2-x}$Ce$_x$CuO$_{4+\delta}$. https://doi.org/10.1016/j.physc.2012.09.001

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