Neutron-scattering study of static antiferromagnetic correlations in La2-xSrxCu1-yZnyO4

被引:216
作者
Kimura, H
Hirota, K
Matsushita, H
Yamada, K [1 ]
Endoh, Y
Lee, SH
Majkrzak, CF
Erwin, R
Shirane, G
Greven, M
Lee, YS
Kastner, MA
Birgeneau, RJ
机构
[1] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan
[2] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA
[3] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[4] MIT, Dept Phys, Cambridge, MA 02139 USA
[5] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
关键词
D O I
10.1103/PhysRevB.59.6517
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Neutron-scattering measurements have been performed to search for possible elastic incommensurate magnetic peaks in superconducting La2-xSrxCuO4 with x=0.10, 0.12, and 0.15. The most dramatic effects are found for x=0.12; in this case, the peak intensity first appears at the onset of superconductivity T-c (=31 K). The resolution-limited peak width indicates that the static magnetic correlation length exceeds 200 Angstrom isotropically in the CuO2 planes. Weak elastic peaks are also observed at low temperatures for x=0.10 while for x = 0.15 any incommensurate elastic scattering is below the limit of detectability. Elastic peaks are observed in Zn-substituted nonsuperconducting La1.88Sr0.12Cu0.97Zn0.03O4 However, in this case, the Zn substitution degrades the magnetic order; the peak appears at lower temperature (17 K) and the correlation length is shorter (80 Angstrom) than that in the Zn-free x = 0.12 sample. [S0163-1829(99)02909-4].
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收藏
页码:6517 / 6523
页数:7
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