Structure of χ 3 -Borophene Studied by Total-Reflection High-Energy Positron Diffraction (TRHEPD).

Autor: Tsujikawa, Yuki, Shoji, Makoto, Hamada, Masashi, Takeda, Tomoya, Mochizuki, Izumi, Hyodo, Toshio, Matsuda, Iwao, Takayama, Akari
Předmět:
Zdroj: Molecules; Jul2022, Vol. 27 Issue 13, p4219-N.PAG, 8p
Abstrakt: We have investigated the structure of χ3-borophene on Ag(111), a monolayer material of boron atoms, via total-reflection high-energy positron diffraction (TRHEPD). By comparing the experimental rocking-curves with ones for several structures calculated by using dynamical diffraction theory, we confirmed that the χ3-borophene layer has a flat structure. The distance from the topmost layer of the metal crystal is 2.4 Å, which is consistent with results reported by X-ray standing wave-excited X-ray photoelectron spectroscopy. We also demonstrated that the in-plane structure of χ3-borophene is compatible with the theoretical predictions. These structural properties indicate that χ3-borophene belongs to a group of epitaxial monolayer sheets, such as graphene, which have weak interactions with the substrates. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index