High Pressure Superconductivity in Iron Based Layered Compounds Studied using Designer Diamonds
Journal Article
·
· J. Phys.: Condens. Matter
OSTI ID:971180
High pressure superconductivity in Iron based superconductor FeSe0.5Te0.5 has been studied up to 15 GPa and 10 K using an eight probe designer diamond anvil in a diamond anvil cell device. Four probe electrical resistance measurements show onset of superconductivity (Tc) at 14 K at ambient pressure with Tc increasing with increasing pressure to 19 K at a pressure of 3.6 GPa. At higher pressures beyond 3.6 GPa, Tc decreases and extrapolation suggests non superconducting behavior above 10 GPa. This loss of superconductivity coincides with the pressure induced amorphization of Fe(SeTe)4 tetrahedra reported at 11 GPa in x-ray diffraction studies at ambient temperature.
- Research Organization:
- Univ. of Alabama, Birmingham, AL (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NA)
- DOE Contract Number:
- FG52-06NA26168
- OSTI ID:
- 971180
- Report Number(s):
- DOE/NA/26168-Publ1
- Journal Information:
- J. Phys.: Condens. Matter, Vol. 21
- Country of Publication:
- United States
- Language:
- English
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