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|Title:||Nature of the Electronic States Involved in the Chemical Bonding and Superconductivity at High Pressure in SnO|
|Authors:||McLeod, J. A.|
Lukoyanov, A. V.
Kurmaev, E. Z.
Finkelstein, L. D.
|Publisher:||Pleiades Publishing Ltd|
|Citation:||Nature of the Electronic States Involved in the Chemical Bonding and Superconductivity at High Pressure in SnO / J. A. McLeod, A. V. Lukoyanov, E. Z. Kurmaev et al. — DOI 10.3390/su132212885 // JETP Letters. — 2011. — Vol. 94. — Iss. 2. — P. 142-146.|
|Abstract:||We have investigated the electronic structure and the Fermi surface of SnO using density functional theory calculations within recently proposed exchange-correlation potential (PBE + mBJ) at ambient conditions and high pressures up to 19.3 GPa where superconductivity was observed. It was found that the Sn valence states (5s, 5p, and 5d are strongly hybridized with the O 2p states, and that our density functional theory calculations are in good agreement with O K-edge X-ray spectroscopy measurements for both occupied and empty states. It was demonstrated that the metallic states appearing under pressure in the semiconducting gap stem due to the transformation of the weakly hybridized O 2p-Sn 5sp subband corresponding to the lowest valence state of Sn in SnO. We discuss the nature of the electronic states involved in chemical bonding and formation of the hole and electron pockets with nesting as a possible way to superconductivity. © 2011 Pleiades Publishing, Ltd.|
|metadata.dc.description.sponsorship:||We acknowledge the support of the Russian Foundation for Basic Research (project nos. 11-02-00022, 10-02-00046, and 10-02-00546), the Natural Sciences and Engineering Research Council of Canada (NSERC), the Canada Research Chair program, the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (project no. MK 3376.2011.2), the Russian Federal Agency of Science and Innovation (project no. 02.740.11.0217), partial support of the Ministry of Education of Science of the Russian Federation (project no. 2.1.1/779, program “Development of Sci entific Potential of Universities”), and the Russian Federal Agency of Science and Innovation (project no. 02.740.11.0217).|
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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