Anomalous He-Gas High-Pressure Studies on Superconducting LaO1-xFxFeAs

W. Bi; H. B. Banks; J. S. Schilling; H. Takahashi; H. Okada; Y. Kamihara; M. Hirano; H. Hosono

doi:10.1088/1367-2630/12/2/023005

Anomalous He-Gas High-Pressure Studies on Superconducting LaO1-xFxFeAs

Superconductivity 2015-05-14 v1

Authors: W. Bi , H. B. Banks , J. S. Schilling , H. Takahashi , H. Okada , Y. Kamihara , M. Hirano , H. Hosono

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Abstract

AC susceptibility measurements have been carried out on superconducting LaO1-xFxFeAs for x=0.07 and 0.14 under He-gas pressures to about 0.8 GPa. Not only do the measured values of dTc/dP differ substantially from those obtained in previous studies using other pressure media, but the Tc(P) dependences observed depend on the detailed pressure/temperature history of the sample. A sizeable sensitivity of Tc(P) to shear stresses provides a possible explanation.

Keywords

superconducting LaO1-xFxFeAs high-pressure study ac susceptibility pressure medium shear stress

Cite

@article{arxiv.0911.5314,
  title  = {Anomalous He-Gas High-Pressure Studies on Superconducting LaO1-xFxFeAs},
  author = {W. Bi and H. B. Banks and J. S. Schilling and H. Takahashi and H. Okada and Y. Kamihara and M. Hirano and H. Hosono},
  journal= {arXiv preprint arXiv:0911.5314},
  year   = {2015}
}

Anomalous He-Gas High-Pressure Studies on Superconducting LaO1-xFxFeAs

Abstract

Keywords

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