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

Journal Article · Fri Feb 22 04:00:00 EST 2013 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.87.060507· OSTI ID:1080177

Ni, N. ^[1]; Straszheim, Warren E. ^[2]; Williams, D. J. ^[1]; Tanatar, Makariy A. ^[2]; Prozorov, Ruslan ^[2]; Bauer, E. D. ^[1]; Ronning, F. ^[1]; Thompson, J. D. ^[1]; Cava, R. J. ^[3]

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1. Los Alamos National Laboratory
2. Ames Laboratory
3. Princeton University

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.

• Research Organization: Ames Laboratory (AMES), Ames, IA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-07CH11358
• OSTI ID: 1080177
• Report Number(s): IS-J 7941
• Journal Information: Physical Review B, Journal Name: Physical Review B Journal Issue: 6 Vol. 87; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY