Pressure-induced Superconductivity in CaLi2

T. Matsuoka; M. Debessai; J. J. Hamlin; A. K. Gangopadhyay; J. S. Schilling

doi:10.1103/PhysRevLett.100.197003

Pressure-induced Superconductivity in CaLi2

Superconductivity 2009-11-13 v2

Authors: T. Matsuoka , M. Debessai , J. J. Hamlin , A. K. Gangopadhyay , J. S. Schilling

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Abstract

A search for superconductivity has been carried out on the hexagonal polymorph of Laves-phase CaLi2, a compound for which Feng, Ashcroft, and Hoffmann predict highly anomalous behavior under pressure. No superconductivity is observed above 1.10 K at ambient pressure. However, high-pressure ac susceptibility and electrical resistivity studies to 81 GPa reveal bulk superconductivity in CaLi2 at temperatures as high as 13 K. The normal-state resistivity shows a dramatic increase with pressure.

Keywords

superconductivity hydrogen storage and hydrides high-pressure phase transitions

Cite

@article{arxiv.0708.2117,
  title  = {Pressure-induced Superconductivity in CaLi2},
  author = {T. Matsuoka and M. Debessai and J. J. Hamlin and A. K. Gangopadhyay and J. S. Schilling},
  journal= {arXiv preprint arXiv:0708.2117},
  year   = {2009}
}

Comments

bulk superconductivity in CaLi2 now confirmed

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