Molecule-Adsorbed Topological Insulator and Metal Surfaces: A Comparative First-Principles Study
Journal Article
·
· Chemistry of Materials
- Weizmann Inst. of Science, Rehovoth (Israel)
- Univ. of Pennsylvania, Philadelphia, PA (United States)
We compare electronic structure characteristics of three different kinds of benzene-adsorbed (111) surfaces: that of Bi2Te3, a prototypical topological insulator, that of Au, a prototypical inert metal, and that of Pt, a prototypical catalytic metal. Using first-principles calculations based on dispersion-corrected density functional theory, we show that benzene is chemisorbed on Pt, but physisorbed on Au and Bi2Te3. Here, the adsorption on Bi2Te3 is particularly weak, consistent with a minimal perturbation of the electronic structure at the surface of the topological insulator, revealed by a detailed analysis of the interaction of the molecular orbitals with the topological surface states.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- FG02-07ER15920; DMR-1120901
- OSTI ID:
- 1480062
- Journal Information:
- Chemistry of Materials, Vol. 30, Issue 6; ISSN 0897-4756
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 10 works
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