Superconductivity close to magnetic instability in Fe ( Se 1 − x Te x ) 0.82
By M. Fang, H. Pham, B. Qian, Tijiang Liu, E. Vehstedt, Y. Liu, L. Spinu, Z. Mao. 2008
497 citations recorded by the source corpus.
We report our study of the evolution of superconductivity and the phase diagram of the ternary $\text{Fe}{({\text{Se}}_{1\ensuremath{-}x}{\text{Te}}_{x})}_{0.82}$ $(0\ensuremath{\le}x\ensuremath{\le}1.0)$ system. We discovered a superconducting phase with ${T}_{c,\text{max}}=14\text{ }\text{K}$ in the $0.3lxl1.0$ range. This superconducting phase is suppressed when the sample composition approaches the end member ${\text{FeTe}}_{0.82}$, which exhibits an incommensurate antiferromagnetic order. We discuss the relationship between the superconductivity and magnetism of this material system in terms of recent results from neutron-scattering measurements. Our results and analyses suggest that superconductivity in this class of Fe-based compounds is associated with magnetic fluctuations and therefore may be unconventional in nature.
Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/2b28c0cbb783cfa9c64895d66b47a615b06ab20a
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In Condensed Matter Physics
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Magnetism and its microscopic origin in iron-based high-temperature superconductors (2012, background): “Four years after the initial discovery of superconductivity in LaFeAsO1−xFx [11], there are now three major families of iron-based superconductors: the iron pnictides [8, 9], iron chalcogenides [14, 61], and alkaline iron selenides [50, 51].”