Metastable adsorption of benzene on the Si(001) surface

Brian Borovsky, Michael Krueger, Eric Ganz

Research output: Contribution to journalArticlepeer-review

88 Scopus citations

Abstract

We have investigated the adsorption of benzene on the Si(001) surface using scanning tunneling microscopy. The central result is that benzene initially adsorbs in a metastable state and then converts to a lower-energy final state. The conversion to the final state occurs rather slowly at room temperature, with a time constant of 19 min, implying an activation energy barrier of about 1.0 eV. We study in detail the appearance of each state and its position relative to the underlying surface dimers in order to make a correspondence to existing proposed models for the structure of benzene adsorbed on Si(001). We measure a lower bound on the energy difference between the two states of 0.14 eV.

Original languageEnglish (US)
Pages (from-to)R4269-R4272
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume57
Issue number8
DOIs
StatePublished - Jan 1 1998

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