Suppression of superconductivity in orthorhombic La{sub 2-x}M{sub x}CuO{sub 4} (M = Ca,Sr)
Conference
·
OSTI ID:10160890
- Northern Illinois Univ., De Kalb, IL (United States). Dept. of Physics
- Argonne National Lab., IL (United States)
We have extended the calcium solid-solubility limit in La{sub 2{minus}x} Ca{sub x}CuO{sub 4} to x = 0.2 using synthesis at high oxygen pressure. The superconducting transition temperature increases with doping to 34 K at x = 0.15 and is suppressed for x > 0.15, similar to the Sr-substituted material. At a fixed doping level, the optimum superconducting properties (the highest {Tc}) are found for flat and square CuO{sub 2}planes.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10160890
- Report Number(s):
- ANL/MSD/CP--83143; CONF-940701--9; ON: DE94013963; CNN: Contract DMR 91-20000
- Country of Publication:
- United States
- Language:
- English
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