Surface Charge—Induced Ordering of the Au(111) Surface

• DOI: 10.1126/science.255.5050.1416
• Publication Date: 2006-10-05T23:03:06Z
• Authors: Jia Wang; Alison J. Davenport; Hugh S. Isaacs; B. M. Ocko
• Keywords: Charge density; Surface charge; Surface layer

Synchrotron surface x-ray scattering (SXS) studies have been carried out at the Au(111)/electrolyte interface to determine influence of charge on microscopic arrangement gold atoms. At electrochemical interface, density can be continuously varied by controlling applied potential. The top layer atoms undergoes a reversible phase transition between (1 × 1) bulk termination and (23 √3) reconstructed changing electrode In order differentiate respective roles adsorbates, were in 0.1 M NaF, NaCl, NaBr solutions. occurs an induced 0.07 ± 0.02 electron per atom all three