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  Pressure-induced superconductivity up to 13.1 K in the pyrite phase of palladium diselenide PdSe2

ElGhazali, M., Naumov, P. G., Mirhosseini, H., Süß, V., Müchler, L., Schnelle, W., et al. (2017). Pressure-induced superconductivity up to 13.1 K in the pyrite phase of palladium diselenide PdSe2. Physical Review B, 96(6): 060509, pp. 1-5. doi:10.1103/PhysRevB.96.060509.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-F1D5-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-F7DB-A
Genre: Journal Article

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 Creators:
ElGhazali, Moaz1, Author              
Naumov, Pavel G.1, Author              
Mirhosseini, Hossein1, Author              
Süß, Vicky1, Author              
Müchler, Lukas2, Author
Schnelle, Walter3, Author              
Felser, Claudia4, Author              
Medvedev, Sergey A.5, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, escidoc:1863425              
2External Organizations, escidoc:persistent22              
3Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, escidoc:1863441              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, escidoc:1863429              
5Sergiy Medvediev, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, escidoc:1863438              

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 Abstract: The evolution of electrical transport properties, the electronic band structure, and lattice dynamics of PdSe2 is studied under high pressure. The emergence of superconductivity is reported in the high-pressure pyrite-type phase of PdSe2. In this transition-metal dichalcogenide, the critical temperature of superconductivity rapidly increases with pressure up to 13.1 K. Ab initio electronic band structure calculations indicate the presence of Dirac and nodal-line fermions in the vicinity of the Fermi energy protected by the pyrite structure symmetry, which can lead to interesting superconducting states. Raman spectroscopy shows a direct correlation between critical temperature and bonding strength of Se-Se dumbbells in PdSe2, underlining the crucial role of bonding for tuning the superconductivity.

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Language(s): eng - English
 Dates: 2017-08-302017-08-30
 Publication Status: Published in print
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 Table of Contents: -
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 96 (6) Sequence Number: 060509 Start / End Page: 1 - 5 Identifier: ISSN: 1098-0121
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925225008