TUNNELING SPECTROSCOPY OF NANOMETER-SIZE CLUSTERS DEPOSITED ON GRAPHITE

A. Wawro, A. Kasuya, R. Czajka and Y. Nishina
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A. Wawro: Institute for Materials Research, Tohoku University, 2–1–1 Katahira, Sendai 980, Japan
A. Kasuya: Institute for Materials Research, Tohoku University, 2–1–1 Katahira, Sendai 980, Japan
R. Czajka: Institute for Materials Research, Tohoku University, 2–1–1 Katahira, Sendai 980, Japan
Y. Nishina: Institute for Materials Research, Tohoku University, 2–1–1 Katahira, Sendai 980, Japan

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 979-982

Abstract: The electronic structures of Sb, Ni, and Au clusters of nanometer size are discussed. Clusters were deposited on a graphite substrate and analyzed with a scanning tunneling microscope in an ultrahigh-vacuum system. Scanning at constant-current mode at different bias voltages was used as a method of spectroscopic measurements. Disappearing of the clusters images at certain range of voltage biases is attributed to occurrence of the energy gap in electronic structure of clusters, suggesting their nonmetallic behavior.

Date: 1996
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DOI: 10.1142/S0218625X96001753

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