63Cu NMR evidence for enhanced antiferromagnetic correlations around Zn impurities in YBa2Cu3O6.7

被引：190

作者：

Julien, MH

Fehér, T

Horvatic, M

Berthier, C

Bakharev, ON

Ségransan, P

Collin, G

Marucco, JF

机构：

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

[2] MPIFKF, F-38042 Grenoble, France

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

[4] Tech Univ Budapest, Inst Phys, Budapest, Hungary

[5] Kazan State Univ, Magnet Resonance Lab, Kazan 420008, Russia

[6] Ctr Etud Saclay, CNRS, CEA, Leon Brillouin Lab, F-91191 Gif Sur Yvette, France

[7] Univ Paris Sud, Lab Composes Stoechiometr, F-91405 Orsay, France

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.84.3422

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Doping the high-T-c superconductor YBa2Cu3O6.7 with 1.5% of nonmagnetic Zn impurities in CuO2 planes is shown to produce a considerable broadening of Cu-63 NMR spectra, as well as an increase of low-energy magnetic fluctuations detected in Cu-63 spin-lattice relaxation measurements. A model-independent analysis demonstrates that these effects are due to the development of staggered magnetic moments on many Cu sites around each Zn and that the Zn-induced moment in the bulk susceptibility might be explained by this staggered magnetization. Several implications of these enhanced antiferromagnetic correlations are discussed.

引用

页码：3422 / 3425

页数：4

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