The effect of magnetic (phase) inhomogeneities upon the low temperature conductivity of antiferromagnetic La₂CuO_4+δ single crystal

2008/07/27 by Н. В. Далакова, Б. И. Белевцев, Dalakova, N. V. +9
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con)

paper · doi:10.48550/arxiv.0807.4290

openalex publication_date 2008/07/27 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28

Abstract

It is found that a strong inhomogeneous distribution of oxygen in single crystal La₂CuO_4+δ can lead to the formation of isolated superconducting inclusions, the average hole concentration being no more than 0.0024 per Cu atom. The behavior of the conductivity in the magnetic field below T=20 K is consistent with possible existence of a insulating low-temperature magnetic phase (spin density waves), which is typical of cuprates with excess oxygen.

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