Origin of the R(15 × 3) surface reconstruction of carburized W(110) - revisited

Jihyun Kim, Eun Ha Shin, J. Seo, H. Kim, G. Rojas, X. Chen, A. Enders, Hanchul Kim, J. S. Kim

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The identification of the surface atomic structure having a large unit cell remains a major challenge, while this surface structure is the starting point for templated growth on it. The atomic structure of the carbon-induced R(15 × 3)-W(110) is investigated by scanning tunneling microscopy (STM) operated around 80 K in near-contact mode, combined with the first-principles calculations. It is shown that the R(15 × 3) reconstruction results from the moiré pattern, which a W-C bilayer of α-W 2 C(0001) forms with the W(110) substrate, confirming an earlier prediction by Bauer et al. Besides the moiré pattern, the present structure contains the surface lattice deformation, the main ingredient of the other model, and provides a comprehensive picture, well reconciling the two previous models.

Original languageEnglish (US)
Pages (from-to)33-37
Number of pages5
JournalSurface Science
Volume682
DOIs
StatePublished - Apr 2019
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea( NRF) grant funded by the Korea government (MISP) (No. 2016M2B2A4912062, No. 2016R1D1A1B03930532 (JK), and No. 2015R1A2A2A01005564 (HK) ). The calculations were performed by using supercomputing resources at the Supercomputing Center/Korea Institute of Science and Technology Information (No. KSC-2012-C2-16 ).

Funding Information:
This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government (MISP) (No. 2016M2B2A4912062, No. 2016R1D1A1B03930532 (JK), and No. 2015R1A2A2A01005564 (HK)). The calculations were performed by using supercomputing resources at the Supercomputing Center/Korea Institute of Science and Technology Information (No. KSC-2012-C2-16).

Publisher Copyright:
© 2019 Elsevier B.V.

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