Synthesis, physical properties and electronic structure of Sr{sub 1-x}La{sub x}Cu{sub 2}Pn{sub 2} (Pn=P, As, Sb)
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China)
To explore new series of high-T{sub c} superconductors, Cu-based ternary pnictides of SrCu{sub 2}Pn{sub 2} (Pn=P, As, Sb) with La doping were synthesized at 1073 K from the stoichiometric reaction of the elements. The electrical and magnetic properties as well as the electronic structure were systematically investigated. Absence of superconductive transition was observed over the temperature range from room temperature down to 2 K, and these materials show p-type metal-like conductivity and Pauli paramagnetic behavior. The near E{sub F} bands mainly originate from Cu 3d and Pn np states and the value of total densities of states (DOS) becomes higher as Pn goes from P to Sb. The results provides us with considerable information for a better understanding of the transport properties in pnictides. - Graphical abstract: Sr{sub 1-x}La{sub x}Cu{sub 2}Pn{sub 2} (Pn=P, As, Sb) show metal-like conducting behavior and no superconductive transition was observed from 300 K down to 2 K. Highlights: Black-Right-Pointing-Pointer The superconductivity and electronic structure of Sr{sub 1-x}La{sub x}Cu{sub 2}Pn{sub 2} were investigated. Black-Right-Pointing-Pointer Sr{sub 1-x}La{sub x}Cu{sub 2}Pn{sub 2} show p-type metal-like conducting behavior and paramagnetism. Black-Right-Pointing-Pointer The near E{sub F} electronic structure of SrCu{sub 2}Pn{sub 2} mainly originate from Cu 3d and Pn np states.
- OSTI ID:
- 22012080
- Journal Information:
- Journal of Solid State Chemistry, Vol. . 187; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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