Feiten FE, Seifert J, Paier J, Kuhlenbeck H, Winter H, Sauer J, Freund HJ. Surface structure of V_{2}O_{3}(0001) revisited.
PHYSICAL REVIEW LETTERS 2015;
114:216101. [PMID:
26066445 DOI:
10.1103/physrevlett.114.216101]
[Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Indexed: 06/04/2023]
Abstract
In a recent paper [A. J. Window et al., Phys. Rev. Lett. 107, 016105 (2011)], it was proposed that V_{2}O_{3}(0001) is terminated by the so-called O_{3} termination, a reconstruction with a terminating distorted hexagonal oxygen layer. We show that the surface is terminated by vanadyl (V═O) groups instead. This conclusion is based on quantitative low-energy electron diffraction combined with scanning tunneling microscopy, fast atom scattering, and density functional theory employing the Heyd-Scuseria-Ernzerhof functional. New insights into the subsurface sensitivity of ion beam triangulation show that results previously interpreted in favor of the O_{3} termination are reconcilable with vanadyl termination as well.
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