Pressure-induced superconductivity up to 13.1 K in the pyrite phase of palladium diselenide PdS e2

Elghazali MA, Naumov PG, Mirhosseini H, Suess V, Muchler L, Schnelle W, Felser C, Medvedev SA (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Physical Review B American Physical Society

Book Volume: 96

Article Number: 060509

Journal Issue: 6

DOI: 10.1103/PhysRevB.96.060509

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.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) Princeton University US United States (USA) (US)

How to cite

APA:

Elghazali, M.A., Naumov, P.G., Mirhosseini, H., Suess, V., Muchler, L., Schnelle, W.,... Medvedev, S.A. (2017). Pressure-induced superconductivity up to 13.1 K in the pyrite phase of palladium diselenide PdS e2. Physical Review B, 96(6). https://doi.org/10.1103/PhysRevB.96.060509

MLA:

Elghazali, Moaz A., et al. "Pressure-induced superconductivity up to 13.1 K in the pyrite phase of palladium diselenide PdS e2." Physical Review B 96.6 (2017).

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