The influence of the structural transition on magnetic fluctuations in NaFeAs

Juanjuan Liu; Jinchen Wang; Wei Luo; Jieming Sheng; Aifeng Wang; Xianhui Chen; Sergey A. Danilkin; Wei Bao

doi:10.1088/0953-8984/28/27/27LT01

The influence of the structural transition on magnetic fluctuations in NaFeAs

Superconductivity 2016-05-27 v2

Authors: Juanjuan Liu , Jinchen Wang , Wei Luo , Jieming Sheng , Aifeng Wang , Xianhui Chen , Sergey A. Danilkin , Wei Bao

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Abstract

NaFeAs belongs to a class of Fe-based superconductors which parent compounds show separated structural and magnetic transitions. Effects of the structural transition on spin dynamics therefore can be investigated separately from the magnetic transition. A plateau in dynamic spin response is observed in a critical region around the structural transition temperature T_S. It is interpreted as due to the stiffening of spin fluctuations along the in-plane magnetic hard axis due to the dxz and dyz orbital ordering. The appearance of anisotropic spin dynamics in the critical region above the T_S at T* offers a dynamic magnetic scattering mechanism for anisotropic electronic properties in the commonly referred "nematic phase".

Keywords

NaFeAs iron-based superconductors structural transition magnetic fluctuations spin dynamics nematic phase orbital ordering

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@article{arxiv.1603.07873,
  title  = {The influence of the structural transition on magnetic fluctuations in NaFeAs},
  author = {Juanjuan Liu and Jinchen Wang and Wei Luo and Jieming Sheng and Aifeng Wang and Xianhui Chen and Sergey A. Danilkin and Wei Bao},
  journal= {arXiv preprint arXiv:1603.07873},
  year   = {2016}
}

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5 pages, 5 figures

The influence of the structural transition on magnetic fluctuations in NaFeAs

Abstract

Keywords

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