Superconductivity in undoped BaFe2As2 by tetrahedral geometry design

@article{Kang2020SuperconductivityIU,
  title={Superconductivity in undoped BaFe2As2 by tetrahedral geometry design},
  author={Jong-Hoon Kang and Jong-Woo Kim and Philip J Ryan and Lin Xie and Lu Guo and Chris Sundahl and Jonathon Schad and Neil Campbell and Yesusa G. Collantes and Eric E. Hellstrom and Mark S Rzchowski and C. B. Eom},
  journal={Proceedings of the National Academy of Sciences},
  year={2020},
  volume={117},
  pages={21170 - 21174}
}
Significance The results demonstrated here show superconductivity in the antiferromagnetic BaFe2As2 without chemical substitution, by atomic level control of local structure through epitaxial superlattice design. The interfacial interactions modify the FeAs4 tetrahedra via systematic control of tetragonal and orthorhombic structures, inducing superconductivity. This indicates structure and dimensionality play an important role in the superconducting properties in Fe-based superconductors, and… Expand

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