Magnetic order and instability in newly synthesized CoSeAs marcasite

Y. Chen; G. Yumnam; A. Dahal; J. Rodriguez; G. Xu; T. Heitmann; D. K. Singh

doi:10.1103/PhysRevResearch.2.023168

Magnetic order and instability in newly synthesized CoSeAs marcasite

Strongly Correlated Electrons 2020-05-21 v1 Materials Science Superconductivity

Authors: Y. Chen , G. Yumnam , A. Dahal , J. Rodriguez , G. Xu , T. Heitmann , D. K. Singh

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Abstract

Marcasite class of compounds provide facile platform to explore novel phenomena of fundamental and technological importance, such as unconventional superconductivity or high performance electrocatalyst. We report the synthesis and experimental investigation of a new marcasite CoSeAs in this letter. Experimental investigation of the new material using neutron scattering measurements reveal weak magnetic correlation of cobalt ions below $T$ = 36.2 K. The modest isotropic exchange interaction between cobalt moments, inferred from random phase approximation analysis, hints of magnetically unstable environment. It is a desirable characteristic to induce unconventional superconductivity via chemical pressure application

Keywords

marcasite CoSeAs magnetic order neutron scattering exchange interaction unconventional superconductivity

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@article{arxiv.2005.09732,
  title  = {Magnetic order and instability in newly synthesized CoSeAs marcasite},
  author = {Y. Chen and G. Yumnam and A. Dahal and J. Rodriguez and G. Xu and T. Heitmann and D. K. Singh},
  journal= {arXiv preprint arXiv:2005.09732},
  year   = {2020}
}

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5 pages, 4 figures

Magnetic order and instability in newly synthesized CoSeAs marcasite

Abstract

Keywords

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