Synthesis, physical properties and electronic structure of Sr{sub 1-x}La{sub x}Cu{sub 2}Pn{sub 2} (Pn=P, As, Sb)

Journal Article · Thu Mar 15 04:00:00 EDT 2012 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2011.12.026· OSTI ID:22012080

Mingsheng, Qin; Chongyin, Yang ^[1]; Zhongtian, Yang ^[1]; Ping, Chen ^[1]

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1. 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, Journal Name: Journal of Solid State Chemistry Vol. . 187; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
DENSITY
ELECTRONIC STRUCTURE
MAGNETIC PROPERTIES
MATERIALS
METALS
PARAMAGNETISM
PNICTIDES
STOICHIOMETRY
SUPERCONDUCTIVITY
SYNTHESIS