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Longitudinal modes of spin fluctuations in iron-based superconductors

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arxiv 1703.10721 v2 pith:W47FFLJZ submitted 2017-03-31 cond-mat.supr-con

Longitudinal modes of spin fluctuations in iron-based superconductors

classification cond-mat.supr-con
keywords magneticiron-basedsuperconductorsfluctuationslongitudinalmodesdifferentphase
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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 an unified effective magnetic model for iron-based superconductors. We focus on the collinear antiferromagnetic phase (CAF) and calculate the behavior of the longitudinal modes 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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