2010/09/20 by M. K. Forthaus, K. Sengupta, O. Heyer +6 · 1 citation
Materials Science · Physics and Astronomy · #Condensed matter physics #Electron #Electronic band structure #Fermi level #Fermi surface #Iron-based superconductors research #Materials science #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Superconductivity #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.105.157001
published as Phys. Rev. Lett. 105, 157001 (2010) · 4 pages, 6 figures, as accepted by Phys. Rev. Lett. (in press)
arxiv created 2010/09/20 · openalex publication_date 2010/10/04 · arxiv updated 2011/07/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We discovered that under pressure SnO with \ensuremathα-PbO structure, the same structure as in many Fe-based superconductors, e.g., \ensuremathβ-FeSe, undergoes a transition to a superconducting state for p\ensuremath\gtrsim6 GPa with a maximum Tc of 1.4 K at p=9.3 GPa. The pressure dependence of Tc reveals a domelike shape and superconductivity disappears for p\ensuremath\gtrsim16 GPa. It is further shown from band structure calculations that SnO under pressure exhibits a Fermi surface topology similar to that reported for some Fe-based superconductors and that the nesting between the hole and electron pockets correlates with the change of Tc as a function of pressure.