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(a) Plotted results of for systematically strontium doped LSCO films with the phenomenological relation , and (b) shows the curves explored at the temperature range of 20–300 K, exhibiting good rectifying behavior, and inset in (b) blows up the details of .
Diagrams for LSCO/NSTO at (a) and (b) .
Hole doping controlled relations measured at (a) 300 K, (b) 200 K, (c) 100 K, and (d) 50 K. The insets in them magnify the details for Fermi level shift.
relations of LSCO/NSTO, with in (a) and in (b) below , are both plotted by the standard approximately form describing superconducting gap. The evolution of extracted zero temperature gap of LSCO with is addressed in (c), which reveals a weak-coupling -wave BCS superconducting behavior of overdoped LSCO.
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