Abstract
We present results of experimental investigations of Ni clusters deposited on ab surface of Bi 2 Sr 2 CaCu 2 O 8+y (BSCCO) single crystals or highly oriented pyrolytic graphite (HOPG) substrates. The microclusters were produced by the plasma gas condensation or evaporator with integral flux monitor. The scanning tunneling spectroscopy was performed at 24K and at the room temperature. The spectra reveal differences between the curves measured above the Ni clusters and substrate, respectively. The relationship between surface atomic scale and local density of states in the materials is also discussed.
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