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- W2069966013 abstract "Abstract Break-junction experiments have been carried out on the Kondo insulator (Ce1−xLax)3Bi4Pt3. At T=1.5 K and for x=0, dV/dI versus V curves for point contacts with R0⩽12 k Ω exhibit semiconducting behavior, i.e. decreasing dV/dI with increasing V. The finite dV/dI at V=0 results from a finite density of states inside the band gap. For the La-doped compounds the semiconducting behavior is less pronounced and a step-like gap structure occurs at V≈±Eg/e. With increasing La concentration the step is shifted to lower V in qualitative agreement with resistivity data. The results suggest that La doping has two effects: reduction of the gap and introduction of impurity states in the band gap of Ce3Bi4Pt3." @default.
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- W2069966013 date "1999-01-01" @default.
- W2069966013 modified "2023-09-27" @default.
- W2069966013 title "Point-contact spectroscopy on the La-doped Kondo insulator Ce3Bi4Pt3" @default.
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- W2069966013 doi "https://doi.org/10.1016/s0921-4526(98)00634-6" @default.
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