We have studied the Au(111) surface under potential control under water, 0.1 M HClO4 and 10 mM NaH2PO4 using scanning tunneling microscopy. The 22×√3 reconstruction was observed, demonstrating that the reconstruction is stable in contact with aqueous solutions. The measured periodicity and z corrugation of the reconstruction are in good agreement with studies done in ultrahigh vacuum. The stability of the reconstruction was found to depend on surface potential (vs a silver quasi-reference electrode). We have also observed structures other than the 22×√3 pattern.

Original languageEnglish (US)
Pages (from-to)5141-5143
Number of pages3
JournalJournal of Applied Physics
Issue number9
StatePublished - 1991

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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