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Anomalous He-Gas High-Pressure Studies on Superconducting LaO1-xFxFeAs
- Source :
- New Journal of Physics 12, 023005 (2010).
- Publication Year :
- 2009
-
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.
- Subjects :
- Condensed Matter - Superconductivity
Subjects
Details
- Database :
- arXiv
- Journal :
- New Journal of Physics 12, 023005 (2010).
- Publication Type :
- Report
- Accession number :
- edsarx.0911.5314
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1088/1367-2630/12/2/023005