Enhanced magnetic ordering in Sm metal under extreme pressure

Y. Deng; J. S. Schilling

doi:10.1103/PhysRevB.99.085137

Enhanced magnetic ordering in Sm metal under extreme pressure

Strongly Correlated Electrons 2019-03-06 v1

Authors: Y. Deng , J. S. Schilling

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Abstract

The dependence of the magnetic ordering temperature To of Sm metal was determined through four-point electrical resistivity measurements to pressures as high as 150 GPa. A strong increase in To with pressure is observed above 85 GPa. In this pressure range Sm ions alloyed in dilute concentration with superconducting Y exhibit giant Kondo pair breaking. Taken together, these results suggest that for pressures above 85 GPa Sm is in a highly correlated electron state, like a Kondo lattice, with an unusually high value of To. A detailed comparison is made with similar results obtained earlier on Nd, Tb and Dy and their dilute magnetic alloys with superconducting Y.

Keywords

sm metal magnetic ordering extreme pressure kondo lattice electrical resistivity

Cite

@article{arxiv.1901.01563,
  title  = {Enhanced magnetic ordering in Sm metal under extreme pressure},
  author = {Y. Deng and J. S. Schilling},
  journal= {arXiv preprint arXiv:1901.01563},
  year   = {2019}
}

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