Superconductivity of structurally disordered Y5Ir6Sn18. Issue 26 (20th June 2022)

• Record Type: Journal Article
• Authors: Levytskyi, Volodymyr; Carrillo-Cabrera, Wilder; Akselrud, Lev; Kundys, Bohdan; Leithe-Jasper, Andreas; Gumeniuk, Roman
• Is Part Of: Dalton transactions. Volume 51:Issue 26(2022)
• Page Start: 10036
• Page End: 10046
• Publication Date: 2022-06-20
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d2dt01353c
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : The large Y5 Ir6 Sn18 crystal was grown from Sn-flux. Its structural and physical properties have been studied. Abstract : The structural and physical properties of Y5 Ir6 Sn18 grown from Sn-flux as large single crystals are studied. Y5 Ir6 Sn18 crystallizes with a unique structure [space group Fm 3̄ m, a = 13.7706(1) Å], which is characterized by a strong disorder. A transmission electron microscopy (TEM) study indicated that the structural model of Y5 Ir6 Sn18 obtained from X-ray diffraction methods is an average description of a complex intergrowth of domains with different structural arrangements. The studied stannide is a type-II superconductor with a critical temperature T c = 2.1 K, a rather weak electron–phonon coupling and conventional s-wave BCS-like mechanisms. Performed theoretical electronic band structure calculations indicated the inconsistency of an idealized structural model earlier reported for Y5 Ir6 Sn18 .