Effect of pressure-driven local structural rearrangement on the superconducting properties of FeSe0.5Te0.5
M. Bendele, Z. Guguchia, F. von Rohr, T. Irifune, T. Shinmei, I. Kantor, S. Pascarelli, B. Joseph, C. Marini
DOI 10.1103/PhysRevB.90.174505 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The pressure dependence of the superconducting transition temperature Tc, the local structure, and the electronic properties of the iron chalcogenide superconductor FeSe0.5Te0.5 was investigated by means of SQUID magnetometry and site-selective polarized x-ray absorption spectroscopy at the iron and selenium K-edges. The measurements reveal a discontinuous decrease of the local bond distances by crossing a tetragonal to monoclinic structural phase transition at pS∼2.7 GPa. The electronic structure, however, evolves evenly, but the superconducting properties are highly affected by changes in the local structure. These results underline the close connection of the lattice and the superconductivity in the iron-based superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| FeSe0.5Te0.5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 14 | Pressure unresolved | onset |
| FeSe0.5Te0.5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 23 | 2.2 GPa | onset |
Similar papers
Coupling of spin and orbital excitations in the iron-based superconductor FeSe0.5Te0.5
similarity 0.97S.-H. Lee et al.
Source status unknown — claims are unverified
Electronic correlations and unusual superconducting response in the optical properties of the iron chalcogenide FeTe0.55Se0.45
similarity 0.97C. C. Homes et al.
Source status unknown — claims are unverified
Anisotropic superconducting properties of single-crystalline FeSe0.5Te0.5
similarity 0.96M. Bendele et al.
Source status unknown — claims are unverified
Spin-Orbit Interactions and the Nematicity Observed in the Fe-Based Superconductors
similarity 0.96P. D. Johnson et al.
Source status unknown — claims are unverified
Coexistence of incommensurate magnetism and superconductivity in Fe1+ySexTe1−x
similarity 0.96R. Khasanov et al.
Source status unknown — claims are unverified
Temperature dependence of the resonance and low-energy spin excitations in superconducting FeTe0.6Se0.4
similarity 0.95Leland W. Harriger et al.
Source status unknown — claims are unverified