Anomalous He-gas high-pressure studies on superconducting LaO 1-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 LaO _1-xF_xFeAs

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

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Ac susceptibility measurements have been carried out on superconducting LaO_1-xF_xFeAs for x = 0.07 and 0.14 under He-gas pressures to ∼0.8 GPa. Not only do the measured values of dT_c/dP differ substantially from those obtained in previous studies using other pressure media, but also the T_c(P) dependences observed depend on the detailed pressure/temperature history of the sample. A sizeable sensitivity of T _c(P) to shear stresses provides a possible explanation.

Original language	English
Article number	023005
Journal	New Journal of Physics
Volume	12
DOIs	https://doi.org/10.1088/1367-2630/12/2/023005
Publication status	Published - 2010 Feb 9
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1088/1367-2630/12/2/023005

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title = "Anomalous He-gas high-pressure studies on superconducting LaO 1-xFxFeAs",

abstract = "Ac susceptibility measurements have been carried out on superconducting LaO1-xFxFeAs for x = 0.07 and 0.14 under He-gas pressures to ∼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 also the Tc(P) dependences observed depend on the detailed pressure/temperature history of the sample. A sizeable sensitivity of T c(P) to shear stresses provides a possible explanation.",

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T1 - Anomalous He-gas high-pressure studies on superconducting LaO 1-xFxFeAs

AU - Bi, W.

AU - Banks, H. B.

AU - Schilling, J. S.

AU - Takahashi, H.

AU - Okada, H.

AU - Kamihara, Y.

AU - Hirano, M.

AU - Hosono, H.

PY - 2010/2/9

Y1 - 2010/2/9

N2 - Ac susceptibility measurements have been carried out on superconducting LaO1-xFxFeAs for x = 0.07 and 0.14 under He-gas pressures to ∼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 also the Tc(P) dependences observed depend on the detailed pressure/temperature history of the sample. A sizeable sensitivity of T c(P) to shear stresses provides a possible explanation.

AB - Ac susceptibility measurements have been carried out on superconducting LaO1-xFxFeAs for x = 0.07 and 0.14 under He-gas pressures to ∼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 also the Tc(P) dependences observed depend on the detailed pressure/temperature history of the sample. A sizeable sensitivity of T c(P) to shear stresses provides a possible explanation.

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JO - New Journal of Physics

JF - New Journal of Physics

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Anomalous He-gas high-pressure studies on superconducting LaO _1-xF_xFeAs

Abstract

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