English

Lattice dynamics of KNi2Se2

Superconductivity 2016-09-20 v1 Strongly Correlated Electrons
Authors: N. Lazarević , M. Radonjić , M. Šćepanović , Hechang Lei , D. Tanasković , C. Petrovic , Z. V. Popović
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Abstract

We report the first principle calculations of the lattice dynamics of KNi2_{2}Se2_2 together with the Raman scattering study.\ We have observed three out of four Raman active modes predicted by the factor group analysis. Calculated phonon frequencies are in good agreement with experimental findings.\ Contrary to its iron counterpart (Kx_xFe2−y_{2-y}Se2_2), K0.95_{0.95}Ni1.86_{1.86}Se2_2 does not show vacancy ordering.

Keywords

lattice dynamics KNi2Se2 first principle calculations Raman scattering phonon frequencies vacancy ordering

Cite

@article{arxiv.1609.05547,
  title  = {Lattice dynamics of KNi2Se2},
  author = {N. Lazarević and M. Radonjić and M. Šćepanović and Hechang Lei and D. Tanasković and C. Petrovic and Z. V. Popović},
  journal= {arXiv preprint arXiv:1609.05547},
  year   = {2016}
}

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