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arXiv · 1009.3787

Superconductivity in SnO: a Nonmagnetic Analog to Fe-based Superconductors?

M. K. Forthaus·K. Sengupta·O. Heyer·N. E. Christensen·A. Svane·K. Syassen·D. I. Khomskii·T. Lorenz·M. M. Abd-Elmeguid
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Abstract

We found that under pressure SnO with alpha-PbO structure, the same structure as in many Fe-based superconductors, e.g. beta-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 dome-like 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.

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M. K. Forthaus, K. Sengupta, O. Heyer, N. E. Christensen, A. Svane, K. Syassen, D. I. Khomskii, T. Lorenz, M. M. Abd-Elmeguid. 2010-09-20. Superconductivity in SnO: a Nonmagnetic Analog to Fe-based Superconductors?. https://doi.org/10.1103/physrevlett.105.157001

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