Is the topological surface state floating on top of a thick lead layer? The case of the Pb/Bi2Se3 interface

Autor:	De Luca, Oreste, Shvets, Igor A., Eremeev, Sergey V., Aliev, Ziya S., Kopciuszynski, Marek, Barinov, Alexey, Ronci, Fabio, Colonna, Stefano, Chulkov, Evgueni V., Agostino, Raffaele G., Papagno, Marco, Flammini, Roberto
Rok vydání:	2023
Předmět:	Condensed Matter - Materials Science Condensed Matter - Other Condensed Matter
Druh dokumentu:	Working Paper
Popis:	The puzzling question about the floating of the topological surface state on top of a thick Pb layer, has now possibly been answered. A study of the interface made by Pb on Bi2Se3 for different temperature and adsorbate coverage condition, allowed us to demonstrate that the evidence reported in the literature can be related to the surface diffusion phenomenon exhibited by the Pb atoms, which leaves the substrate partially uncovered. Comprehensive density functional theory calculations show that despite the specific arrangement of the atoms at the interface, the topological surface state cannot float on top of the adlayer but rather tends to move inward within the substrate. Comment: 9 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2308.13316 Zobrazit plný text záznamu View this record from Arxiv