This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.102.115427 in citations.
Please use the identifier: http://hdl.handle.net/2128/25776 in citations.
Se intercalation between Pt Se 2 and the Pt surface during synthesis of Pt Se 2 by direct selenization of Pt(111)
Se intercalation between Pt Se 2 and the Pt surface during synthesis of Pt Se 2 by direct selenization of Pt(111)
Using the first principles calculations, we analyze the structural and electronic properties of a PtSe2 monolayer on Pt substrate, obtained by direct selenization of the Pt(111) surface [Wang et al., Nano Lett. 15, 4013 (2015)]. We demonstrate that in order to reproduce the experimental result that...
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Personal Name(s): | Bosnar, Mihovil (Corresponding author) |
---|---|
Caciuc, Vasile / Atodiresei, Nicolae (Corresponding author) / Lončarić, Ivor / Blügel, Stefan | |
Contributing Institute: |
Quanten-Theorie der Materialien; IAS-1 JARA - HPC; JARA-HPC JARA-FIT; JARA-FIT Quanten-Theorie der Materialien; PGI-1 |
Published in: | Physical Review B Physical review / B, 102 102 (2020 2020) 11 11, S. 115427 115427 |
Imprint: |
Woodbury, NY
Inst.
2020
|
DOI: |
10.1103/PhysRevB.102.115427 |
Document Type: |
Journal Article |
Research Program: |
Hybrid 2D-based interfaces from first principles Controlling Configuration-Based Phenomena Controlling Spin-Based Phenomena |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/25776 in citations.
Using the first principles calculations, we analyze the structural and electronic properties of a PtSe2 monolayer on Pt substrate, obtained by direct selenization of the Pt(111) surface [Wang et al., Nano Lett. 15, 4013 (2015)]. We demonstrate that in order to reproduce the experimental result that PtSe2 is physisorbed on the surface, the surface must be passivated. We propose that this passivation is most likely due to intercalation of Se atoms between PtSe2 and Pt surface during the selenization process. In this case the mean distance between the Se-passivated surface and PtSe2 is found to be 3.24Å, which is consistent with the distance that can be extracted from the scanning transmission electron microscopy image of the hybrid system, and the adsorption energy is found to fall into physisorption range. Therefore, our findings provide an insight into the synthesis of PtSe2 by direct selenization: A realistic structural model should include a Se-passivated surface and not a clean one. |