Superconductivity at 27K in tetragonal FeSe under high pressure
By Y. Mizuguchi, F. Tomioka, S. Tsuda, T. Yamaguchi, Y. Takano. 2008
557 citations recorded by the source corpus.
A huge enhancement of the superconducting transition temperature Tc was observed in a tetragonal FeSe superconductor under high pressure. The onset temperature was as high as 27K at 1.48GPa and the pressure coefficient showed an extremely high value of 9.1K∕GPa. The upper critical field Hc2 was estimated to be ∼72T at 1.48GPa. Because of the high Hc2, the FeSe system can be applied to superconducting wire rods.
Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/67056dd655b6b1406c3d19c4d2a2e6fa06608d8b
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Citations in the corpus
- Tellurium substitution effect on superconductivity of the α-phase iron selenide (2008, background): “tures below 105 K [1]. This result indicates that partially substituted Te-atom induces a local strain in the lattice. As the temperature is lowered to 6 K, unlike what was reported in LaO0.9F0.1FeAs [7], we do not observe the shrinkage of d-spacing along a and b direction (a = 3.809 Å, c = 5.995 Å ”
- Angle-resolved photoemission studies of quantum materials (2020, unknown): “…temperature Tc shows systematic dependence on the iron-chalcogen bond angle, as reflected in the Tc enhancement from 8 K to 37 K and the corresponding phonon frequency change under modest pressure in FeSe (Huang et al., 2010; Margadonna et al., 2009; Medvedev et al., 2009; Mizuguchi et al., 2008).”