The Pressure Effects on Electronic Structure of Iron Chalcogenide Superconductors FeSe${}_{1-x}$Te${}_x$

Abstract

We study the electronic structure of iron-based superconductors FeSe${}_{1-x}$Te${}_x$ within the density functional theory. We pay particular attention to the pressure effects on the Fermi surface (FS) topology, which seem to be correlated with a critical superconducting temperature TC of iron chalcogenides and pnictides. A reduction of the FS nesting between hole and electron cylinders with increasing pressure is observed, which can lead to higher values of TC . The tellurium substitution into selenium sites yields FS changes similar to the pressure effect.

4 pages, 6 figures, 1 table

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Cited by in corpus (7)

• The substitution effects on electronic structure of iron selenide superconductors
• Strain effects on electronic structure of the iron selenide superconductor
• Strain effects on the electronic structure of the FeSe0.5Te0.5 superconductor
• Magnetic phase transitions and superconductivity in strained FeTe
• Origin of pressure induced second superconducting dome in AyFe2-xSe2 [A=K, (Tl,Rb)]
• Electronic structure of ruthenium-doped iron chalcogenides
• Superconducting properties of FeSe0.5Te0.5 under high pressure