The effect of magnetic (phase) inhomogeneities upon the low temperature conductivity of antiferromagnetic La_{2}CuO_{4+δ} single crystal

Details The effect of magnetic (phase) inhomogeneities upon the low temperature conductivity of antiferromagnetic La_{2}CuO_{4+δ} single crystal The effect of magnetic (phase) inhomogeneities upon the low temperature conductivity of antiferromagnetic La_{2}CuO_{4+δ} single crystal

2008-07-27

arxiv.org/abs/0807.4290v1

Physics

Condensed Matter

Superconductivity

4 pages with 3 figs, a translation from Russian into English of paper submitted to Izvestiya Ross. Akad. Nauk, Ser. Fizicheska

Scientific paper

It is found that a strong inhomogeneous distribution of oxygen in single crystal La_{2}CuO_{4+\delta} 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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