Absence of long wavelength nematic fluctuations in LiFeAs

Adrian Merritt; Jose Rodriguez-Rivera; Yu Li; Weiyi Wang; Chenglin Zhang; Pengcheng Dai; Dmitry Rezik

Absence of long wavelength nematic fluctuations in LiFeAs

Superconductivity 2016-11-10 v1

Authors: Adrian Merritt , Jose Rodriguez-Rivera , Yu Li , Weiyi Wang , Chenglin Zhang , Pengcheng Dai , Dmitry Rezik

Abstract

We investigated long-wavelength nematic fluctuations in an Fe-based superconductor LiFeAs near q=(0.05,0,0) by measuring temperature-dependent renormalization of acoustic phonons through inelastic neutron scattering. We found that the phonons have conventional behavior, as would be expected in the absence of electronic nematic fluctuations. This observation implies that either electron-phonon coupling is too weak to see any effect or that nematic fluctuations are not present.

Keywords

nematic fluctuations LiFeAs iron-based superconductor acoustic phonons inelastic neutron scattering electron-phonon coupling

Cite

@article{arxiv.1611.02748,
  title  = {Absence of long wavelength nematic fluctuations in LiFeAs},
  author = {Adrian Merritt and Jose Rodriguez-Rivera and Yu Li and Weiyi Wang and Chenglin Zhang and Pengcheng Dai and Dmitry Rezik},
  journal= {arXiv preprint arXiv:1611.02748},
  year   = {2016}
}

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5 pages, one figure

Absence of long wavelength nematic fluctuations in LiFeAs

Abstract

Keywords

Cite

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