Theory of static and dynamic antiferromagnetic vortices in LSCO superconductors
Theory of static and dynamic antiferromagnetic vortices in LSCO superconductors
复制标题
LSCO 超导体中的静态和动态反铁磁涡流理论
DOI：
10.1016/s0022-3697(02)00243-3
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发表时间：
2001
影响因子：
4
通讯作者：
Shoucheng Zhang
中科院分区：
文献类型：
--
作者：
Jiangping Hu;Shoucheng Zhang
SO（5）理论的一个关键预言是反铁磁涡旋态。最近的LSCO超导体的中子散射实验表明，反铁磁序增强的涡旋状态。在这里，我们回顾了自最初的建议，并提出了在LSCO超导体的静态和动态反铁磁涡旋的理论进展。结果表明，反铁磁区诱导的涡旋可以大于相干长度，由于轻的有效质量的动态反铁磁波动在最佳掺杂，并接近反铁磁态在欠掺杂制度。系统的实验提出明确地确定，场致磁散射起源于旋涡，而不是从散装。
A key prediction of the SO(5) theory is the antiferromagnetic vortex state. Recent neutron scattering experiment on LSCO superconductors revealed enhanced antiferromagnetic order in the vortex state. Here we review theoretical progress since the original proposal and present a theory of static and dynamic antiferromanetic vortices in LSCO superconductors. It is shown that the antiferromagnetic region induced by the vortices can be greater than the coherence length, due to the light effective mass of the dynamic antiferromagnetic fluctuations at optimal doping, and close proximity to the antiferromagentic state in the underdoped regime. Systematic experiments are proposed to unambiguously determine that the field induced magnetic scattering originates from the vortices and not from the bulk.