Dispersion of the neutron resonance in cuprate superconductors -: art. no. 180507

被引：40
|
作者：
Chubukov, AV
Jankó, B
Tchernyshyov, O
机构：
[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA
[2] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[3] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA
[4] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA
来源：
PHYSICAL REVIEW B | 2001年 / 63卷 / 18期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevB.63.180507
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We argue that recently measured downward dispersion of the neutron resonance peak in cuprate superconductors is naturally explained if the resonance is viewed as a spin-1 collective mode in a d-wave superconductor. The reduction of the resonant frequency away from the antiferromagnetic wave vector is a direct consequence of the momentum dependence of the d-wave superconducting gap. When the magnetic correlation length becomes large, the dispersion should become magnonlike. i.e.. curve upwards from (pi,pi).
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页数：4
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