Structure and Electronic State of Boron Atomic Chains on a Noble Metal (111) Surface

A two-dimensional crystal of the copper boride was grown on the well-known Cu(111) surface by boron deposition. The atomic structure and the electronic state were analyzed by a concerting usage of positron diffraction and photoemission spectroscopy. The surface layer is composed of the B and Cu atom...

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Bibliographic Details
Published in:E-journal of surface science and nanotechnology 2023/09/07, Vol.22(1), pp.1-8
Main Authors: Tsujikawa, Yuki, Zhang, Xiaoni, Horio, Masafumi, Komori, Fumio, Nakashima, Takeru, Ando, Yasunobu, Kondo, Takahiro, Matsuda, Iwao
Format: Article
Language:English
Subjects:
Atomic chain
Atomic structure
Boron
Copper
Electron states
Noble metals
Photoelectric emission
Photoelectron spectroscopy
Positron diffraction
Substrates
Surface layers
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Summary:A two-dimensional crystal of the copper boride was grown on the well-known Cu(111) surface by boron deposition. The atomic structure and the electronic state were analyzed by a concerting usage of positron diffraction and photoemission spectroscopy. The surface layer is composed of the B and Cu atomic chains that are alternately arranged. It has been known that the B and Cu phases are completely separated in three-dimensional (3D) materials. The present study intriguingly revealed that a compound is formed in two-dimension (2D) at the surface. In addition, the Cu(111) substrate was found to affect a relative height between the B and Cu chains. The 2D Cu-B compound on Cu(111) likely becomes an ideal B/Cu interface to develop surface science and boron chemistry.
ISSN:1348-0391
1348-0391
DOI:10.1380/ejssnt.2023-058