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This content will become publicly available on May 9, 2017

Title: Formation of two-dimensional CuSe on Cu(111) at very low selenium coverage

Here, using scanning tunneling microscopy (STM), we observe that adsorption of Se on Cu(111) produces islands with (√3 x √3)R30° structure, at Se coverages far below the structure's ideal coverage of 1/3 ML. Based on density functional theory (DFT), these islands cannot form due to attractive interactions between chemisorbed Se atoms. DFT shows that incorporating Cu atoms into the √3-Se lattice stabilizes the structure, which provides a plausible explanation for the experimental observations.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [3] ;  [5]
  1. Iowa State Univ., Ames, IA (United States); Surface and Interface Science Lab. RIKEN, Saitama (Japan)
  2. Ames Lab., Ames, IA (United States)
  3. Surface and Interface Science Lab. RIKEN, Saitama (Japan)
  4. Surface and Interface Science Lab. RIKEN, Saitama (Japan); Univ. College London, London (United Kingdom)
  5. Ames Lab. and Iowa State Univ., Ames, IA (United States)
Publication Date:
OSTI Identifier:
1278748
Report Number(s):
IS-J--8974
Journal ID: ISSN 1439-4235
Grant/Contract Number:
CHE-1507223; AC02-07CH11358; AC02-05CH11231
Type:
Accepted Manuscript
Journal Name:
ChemPhysChem
Additional Journal Information:
Journal Volume: 17; Journal Issue: 14; Journal ID: ISSN 1439-4235
Publisher:
ChemPubSoc Europe
Research Org:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY