Bulk Superconductivity at 14 K in Single Crystals of Fe1+yTexSe1-x
By B. C. Sales, A. Sefat, M. A. McGuire, Rongying Jin, D. Mandrus, Y. Mozharivskyj. 2009
346 citations recorded by the source corpus.
Resistivity, magnetic susceptibility, and heat-capacity measurements are reported for single crystals of Fe{sub 1+y}Te{sub x}Se{sub 1-x} grown via a modified Bridgeman method with 0 < y < 0.15 and x = 1, 0.9, 0.75, 0. 67, 0.55, and 0.5. Although resistivity measurements show traces of superconductivity near 14 K for all x except x = 1, only crystals grown with compositions near x = 0.5 exhibit bulk superconductivity. The appearance of bulk superconductivity correlates with a reduction in the magnitude of the magnetic susceptibility at room temperature and smaller values of y, the concentration of Fe in the Fe(2) site.
Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/d65b050974cf9171e06d03351794f95ca74d9936
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In Condensed Matter Physics
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Superconductivity in iron compounds (2011, background): “In FeSe0:5Te0:5, Tc 14 K, increases linearly with temperature by about 15% between 100 and 250 K (highest temperature of measurement) (Sales et al., 2009).”