Charge Segregation, Cluster Spin-Glass and Superconductivity in La1.94Sr0.06CuO4

M. -H. Julien; F. Borsa; P. Carretta; M. Horvatic; C. Berthier; C. T. Lin

doi:10.1103/PhysRevLett.83.604

Charge Segregation, Cluster Spin-Glass and Superconductivity in La1.94Sr0.06CuO4

Superconductivity 2009-10-31 v2 Strongly Correlated Electrons

Authors: M. -H. Julien , F. Borsa , P. Carretta , M. Horvatic , C. Berthier , C. T. Lin

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Abstract

A 63Cu and 139La NMR/NQR study of superconducting (Tc=7 K) La1.94Sr0.06CuO4 single crystal is reported. Coexistence of spin-glass and superconducting phases is found below ~5 K from 139La NMR relaxation. 63Cu and 139La NMR spectra show that, upon cooling, CuO2 planes progressively separate into two magnetic phases, one of them having enhanced antiferromagnetic correlations. These results establish the AF-cluster nature of the spin-glass. We discuss how this phase can be related to the microsegregation of mobile holes and to the possible pinning of charge-stripes.

Keywords

charge segregation spin glass superconductivity lanthanum strontium cuprate nmr charge stripes

Cite

@article{arxiv.cond-mat/9903005,
  title  = {Charge Segregation, Cluster Spin-Glass and Superconductivity in La1.94Sr0.06CuO4},
  author = {M. -H. Julien and F. Borsa and P. Carretta and M. Horvatic and C. Berthier and C. T. Lin},
  journal= {arXiv preprint arXiv:cond-mat/9903005},
  year   = {2009}
}

Comments

4 pages. Modified manuscript with clarifications

Charge Segregation, Cluster Spin-Glass and Superconductivity in La1.94Sr0.06CuO4

Abstract

Keywords

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