Charge segregation, cluster spin glass, and superconductivity in La1.94Sr0.06CuO4

被引：110

作者：

Julien, MH

Borsa, F

Carretta, P

Horvatic, M

Berthier, C

Lin, CT

机构：

[1] Ist Nazl Fis Nucl, Dipartimento Fis A Volta, Unita Pavia, I-27100 Pavia, Italy

[2] Iowa State Univ, Dept Phys, Ames Lab, Ames, IA 50011 USA

[3] CNRS, Grenoble High Magnet Field Lab, F-38042 Grenoble 9, France

[4] MPI, FKF, F-38042 Grenoble 9, France

[5] Univ Grenoble 1, Spectrometrie Phys Lab, F-38402 St Martin Dheres, France

[6] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.83.604

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A Cu-63 and La-139 NMR/NQR study of superconducting (T-c = 8 K) La1.94Sr0.06CuO4 single crystal is reported. Coexistence of spin-glass and superconducting phases is found below similar to 5 K from La-139 NMR relaxation. Cu-63 and La-139 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 antiferromagnetic-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.

引用

页码：604 / 607

页数：4

共 38 条

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