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Electron-Phonon Interaction and Localization of Surface-State Carriers in a Metallic Monolayer
2007
Physical Review Letters
Preserved Fulltext
Temperature-dependent electron transport in a metallic surface superstructure, Si111 3 p 3 p -Ag, was studied by a micro-four-point probe method and photoemission spectroscopy. The surface-state conductivity exhibits a sharp transition from metallic conduction to strong localization at 150 K. The metallic regime is due to electron-phonon interaction while the localization seemingly originates from coherency of electron waves. Random potential variations, caused by Friedel oscillations of
doi:10.1103/physrevlett.99.146805
pmid:17930700
fatcat:2ahb6ylfejb4nbbk2v4f653zc4