Temperature-concentration phase diagram of (Ca1-xLax)10(Pt3As8)(Fe2As2)5 superconductors

Authors :: Ni, N.
Straszheim, W. E.
Williams, D. J.
Tanatar, M. A.
Prozorov, R.
Bauer, E. D.
Ronning, F.
Thompson, J. D.
Cava, R. J.
Source :: Phys. Rev. B 87, 060507 (2013) (Rapid Communications)
Publication Year :: 2012
Abstract: Single crystals of (Ca1-xLax)10(Pt3As8)(Fe2As2)5 (x = 0 to 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 Tc around 26 K is observed in the temperature-concentration phase diagram.<br />Comment: The affiliations are corrected. Arxiv number for reference 10 is added

Subjects :: Condensed Matter - Superconductivity
Condensed Matter - Strongly Correlated Electrons

Full Text Access

Tools