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Title: Barrier-free subsurface incorporation of 3d metal atoms into Bi(111) films

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [2];  [2];  [3];  [3];  [1];  [4];  [3];  [4];  [2];  [1]
  1. Univ. Duisburg-Essen, Duisburg (Germany)
  2. Univ. Paderborn, Paderborn (Germany)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Univ. Hannover, Hannover (Germany)

By combining scanning tunneling microscopy with density functional theory it is shown that the Bi(111) surface provides a well-defined incorporation site in the first bilayer that traps highly coordinating atoms such as transition metals (TMs) or noble metals. All deposited atoms assume exactly the same specific sevenfold coordinated subsurface interstitial site while the surface topography remains nearly unchanged. Notably, 3d TMs show a barrier-free incorporation. The observed surface modification by barrier-free subsorption helps to suppress aggregation in clusters. Thus, it allows a tuning of the electronic properties not only for the pure Bi(111) surface, but may also be observed for topological insulators formed by substrate-stabilized Bi bilayers.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704; AC02-98CH10886
OSTI ID:
1214097
Alternate ID(s):
OSTI ID: 1183227
Report Number(s):
BNL-108267-2015-JA; PRBMDO; KC0403020
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 19; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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Cited By (3)

Controlling conductivity by quantum well states in ultrathin Bi(111) films journal January 2018
Quantum transport in the surface states of epitaxial Bi(111) thin films journal September 2016
Controlling conductivity by quantum well states in ultrathin Bi(111) films other January 2018

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