Photoemission study of the transition from the insulating to metallic state in ultrathin layers

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.55.R1977· OSTI ID:450353

Huang, D J; Reisfeld, G; Strongin, M ^[1]

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1. Department of Physics, Brookhaven National Laboratory, Upton, New York, 11973-5000 (United States)

The transition from the insulating to metallic state in ultrathin Pb films was studied using high-resolution photoemission. The states near E{sub F} were probed as Pb was deposited onto a thin insulating layer, thin enough to reduce macroscopic charging. The results, which experimentally show a vanishing of states at E{sub F}, are consistent with the arguments of Efros and Shklovskii based on electron-electron interactions, and as far as we know are the first {ital in situ} study of the electronic properties as one goes from the insulating to metallic state in a two-dimensional system. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Brookhaven National Laboratory
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 450353
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 4 Vol. 55; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTRON CORRELATION
ELECTRON-ELECTRON INTERACTIONS
ELECTRONIC STRUCTURE
ENERGY-LEVEL DENSITY
LEAD
PHOTOEMISSION
THIN FILMS