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Transport and thermodynamic properties of (Ca1-xLax)(10)(Pt3As8)(Fe2As2)(5) superconductors

TitleTransport and thermodynamic properties of (Ca1-xLax)(10)(Pt3As8)(Fe2As2)(5) superconductors
Publication TypeJournal Article
Year of Publication2013
AuthorsNi, N, Straszheim, WE, Williams, DJ, Tanatar, MA, Prozorov, R, Bauer, ED, Ronning, F, Thompson, JD, Cava, RJ
JournalPhysical Review B
Date Published02
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000315273600001
Keywordshigh magnetic-fields

Single crystals of (Ca1-xLax)(10)(Pt3As8)(Fe2As2)(5) (x = 0-0.182) superconductors have been grown and characterized by x-ray, microprobe, transport, and thermodynamic measurements. Features in the magnetic susceptibility, specific heat, and two kinks in the derivative of the electrical resistivity around 100 K in the x = 0 compound support the existence of decoupled structural and magnetic phase transitions. With La doping, the structural/magnetic phase transitions are suppressed and a half dome of superconductivity with a maximal T-c around 26 K is observed in the temperature-concentration phase diagram. DOI: 10.1103/PhysRevB.87.060507

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