Presence of magnetic excitations in SmFeAsO

Jonathan Pelliciari; Marcus Dantz; Yaobo Huang; Vladimir N. Strocov; Lingyi Xing; Xiancheng Wang; Changqing Jin; Thorsten Schmitt

doi:10.1063/1.4962966

Presence of magnetic excitations in SmFeAsO

Superconductivity 2016-11-14 v1 Strongly Correlated Electrons

Authors: Jonathan Pelliciari , Marcus Dantz , Yaobo Huang , Vladimir N. Strocov , Lingyi Xing , Xiancheng Wang , Changqing Jin , Thorsten Schmitt

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Abstract

We measured dispersive spin excitations in $\mathrm{SmFeAsO}$ , parent compound of $\mathrm{SmFeAsO_{\text{1-x}}F_{\text{x}}}$ one of the highest temperature superconductors of Fe pnictides (T $_{\text{C}}\approx$ 55~K). We determine the magnetic excitations to disperse with a bandwidth energy of ca 170 meV at (0.47, 0) and (0.34, 0.34), which merges into the elastic line approaching the $\Gamma$ point. Comparing our results with other parent Fe pnictides, we show the importance of structural parameters for the magnetic excitation spectrum, with small modifications of the tetrahedron angles and As height strongly affecting the magnetism.

Keywords

SmFeAsO magnetic excitations spin excitations iron pnictides superconducting parent compound structural parameters tetrahedron angles

Cite

@article{arxiv.1611.03620,
  title  = {Presence of magnetic excitations in SmFeAsO},
  author = {Jonathan Pelliciari and Marcus Dantz and Yaobo Huang and Vladimir N. Strocov and Lingyi Xing and Xiancheng Wang and Changqing Jin and Thorsten Schmitt},
  journal= {arXiv preprint arXiv:1611.03620},
  year   = {2016}
}

Presence of magnetic excitations in SmFeAsO

Abstract

Keywords

Cite

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