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, and M. M. Abd-Elmeguid
Phys. Rev. Lett. 105, 157001 – Published 4 October 2010

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 p6GPa with a maximum Tc of 1.4 K at p=9.3GPa. The pressure dependence of Tc reveals a domelike shape and superconductivity disappears for p16GPa. 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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  • Received 2 July 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.157001

© 2010 The American Physical Society

Authors & Affiliations

M. K. Forthaus1, K. Sengupta1,*, O. Heyer1, N. E. Christensen2, A. Svane2, K. Syassen3, D. I. Khomskii1, T. Lorenz1, and M. M. Abd-Elmeguid1

  • 1II. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
  • 2Department of Physics and Astronomy, Aarhus University, Bygning 1520, Ny Munkegade 120, DK-8000 Aarhus, Denmark
  • 3Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany

  • *Present address: Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro 22290-180, RJ, Brazil.

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Vol. 105, Iss. 15 — 8 October 2010

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