Magnetic neutron scattering in hole-doped cuprate superconductors

被引:151
作者
Birgeneau, Robert J. [1 ]
Stock, Chris
Tranquada, John M.
Yamada, Kazuyoshi
机构
[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94729 USA
[2] Johns Hopkins Univ, Dept Phys, Baltimore, MD 21218 USA
[3] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[4] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
关键词
superconductivitiy; neutron scattering; cuprates; low-dimensional magnets;
D O I
10.1143/JPSJ.75.111003
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A review is presented of the static and dynamic magnetic properties of hole-doped cuprate superconductors measured with neutron scattering. A wide variety of experiments are described with emphasis on the monolayer La2-x(Sr,Ba)(x)CuO4 and bilayer YBa2Cu3O6+x cuprates. At zero hole doping, both classes of materials are antiferromagnetic insulators with large superexchange constants of J > 100meV. For increasing hole doping, the cuprates become superconducting at a critical hole concentration of x(c) = 0.055. The development of new instrumentation at neutron beam sources coupled with the improvement in materials has lead to a better understanding of these materials and the underlying spin dynamics over a broad range of hole dopings. We will describe how the spin dispersion changes across the insulating to superconducting boundary as well as the static magnetic properties which are directly coupled with the superconductivity. Experiments probing the competing magnetic and superconducting order parameters involving magnetic fields, impurity doping, and structural order will be examined. Correlations between superconductivity and magnetism will also be discussed.
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页数:12
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