Longitudinal modes of spin fluctuations in iron-based superconductors

被引：2
作者：
Zhang, Qiang [1 ,2 ]
Hu, Jiangping [1 ,2 ,3 ,4 ]
机构：
[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
[3] Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China
[4] Univ Chinese Acad Sci, Kavli Inst Theoret Sci, Beijing 100049, Peoples R China
来源：
PHYSICAL REVIEW B | 2017年 / 96卷 / 05期
基金：
美国国家科学基金会;
关键词：
MAGNETISM; ORDER;
D O I：
10.1103/PhysRevB.96.054518
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Iron-based superconductors can exhibit different magnetic ground states and are in a critical magnetic region where frustrated magnetic interactions strongly compete with each other. Here we investigate the longitudinal modes of spin fluctuations in a unified effective magnetic model for iron-based superconductors. We focus on the collinear antiferromagnetic phase and calculate the behavior of the longitudinal mode when different phase boundaries are approached. The results can help to determine the nature of the magnetic fluctuations in iron-based superconductors.
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页数：6
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