title: Superconductivity in SnO: a nonmagnetic analog to Fe-based superconductors?
abstract: We discovered that under pressure SnO with α-PbO structure, the same structure as in many Fe-based superconductors, e.g., β-FeSe, undergoes a transition to a superconducting state for p≳6 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≳16 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.
authors.affiliation: II. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany.
authors.forename: M K
authors.initials: MK
authors.lastname: Forthaus
authors.forename: K
authors.initials: K
authors.lastname: Sengupta
authors.forename: O
authors.initials: O
authors.lastname: Heyer
authors.forename: N E
authors.initials: NE
authors.lastname: Christensen
authors.forename: A
authors.initials: A
authors.lastname: Svane
authors.forename: K
authors.initials: K
authors.lastname: Syassen
authors.forename: D I
authors.initials: DI
authors.lastname: Khomskii
authors.forename: T
authors.initials: T
authors.lastname: Lorenz
authors.forename: M M
authors.initials: MM
authors.lastname: Abd-Elmeguid