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

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...

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Bibliographic Details
Published in:arXiv.org 2010-09
Main Authors: thaus, M K, Sengupta, K, Heyer, O, Christensen, N E, Svane, A, Syassen, K, Khomskii, D I, Lorenz, T, Abd-Elmeguid, M M
Format: Article
Language:English
Subjects:
Fermi surfaces
Nesting
Pressure dependence
Superconductivity
Topology
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1009.3787