Observing an ordered surface phase by B deposition on Cu(110)

Tsujikawa, Yuki; Zhang, Xiaoni; Horio, M.; Wada, Tetsuya; Miyamoto, Masashige; Sumi, Toshihide; Komori, Fumio; Kondo, Takahiro; Matsuda, Iwao

doi:10.1016/j.susc.2023.122282

Cited by 3 publications

(7 citation statements)

References 34 publications

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“…By deposition of boron (99.999% pure) on the Cu(110) surface at 500 °C, we were able to obtain a slight 3 × 1 LEED pattern that corresponded to the B/Cu(110) surface imaged by STM. The LEED pattern with detailed information on condition of the boron deposition is described in refs and .…”

Section: Methodsmentioning

confidence: 99%

“…Based on a structure model of the reconstructed Cu surface (Figure 3), Figure 4 schematically describes the sequential growth processes at the surface step based on the three-layer model. It is of note that the X-ray photoemission spectroscopy (XPS) result of the 3 × 1-B/ Cu(110) 14 phase showed a similar spectra of the Cu-Boride on Cu(111) suggesting this phase to be another Cu-Boride compound, which is in good agreement with the proposed structural model and growth mode extending the Cu terrace. On the Cu(110) surface, copper atoms in the first (topmost) layer sit at hollow sites on the second layer, and the step structure is illustrated in Figure 4a.…”

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confidence: 99%

“…For example, the wellknown CuO chain of the O/Cu(110) phase grows parallel to the [001] direction according to the steps, 25−28 which is orthogonal to the 1-D direction of the present B/Cu(110) phase. 14 The peculiarity of B/Cu(110) most likely originates from the thermal stability of the quasi-periodic 1-D structure or the kinetics of its formation. The connection of the diffused adatom at the chain end has been critical for 1-D growth on semiconductor surfaces.…”

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confidence: 99%

“…This was the origin of the 3-fold periodicity that was also observed with electron diffraction. , However, the 1-D structure in the [11̅0] direction was composed of bright and dark regions that could not be explained with regular translational symmetry. The contrast between self-assembled one-dimensional growth and the moderately disordered structure posed an intriguing situation of this novel Cu-Boride . To unveil the surface structural features, a process of the fast Fourier transform (FFT) was applied to Figure g to further examine the order of the 1-D system.…”

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confidence: 99%

“…The growth of the 1-D atomic structure was in contrast to that of other structures on Cu(110). For example, the well-known CuO chain of the O/Cu(110) phase grows parallel to the [001] direction according to the steps, − which is orthogonal to the 1-D direction of the present B/Cu(110) phase . The peculiarity of B/Cu(110) most likely originates from the thermal stability of the quasi-periodic 1-D structure or the kinetics of its formation.…”

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confidence: 99%

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Quasi-Periodic Growth of One-Dimensional Copper Boride on Cu(110)

Tsujikawa,

Zhang,

Yamaguchi

et al. 2024

Nano Lett.

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An unexplored material of copper boride has been realized recently in two-dimensional form at a (111) surface of the fcc copper crystal. Here, one-dimensional (1-D) boron growth was observed on the Cu(110) surface, as probed by atomically resolved scanning probe microscopy. The 1-D copper boride was composed of quasi-periodic atomic chains periodically aligned parallel to each other, as confirmed by Fourier transform analysis. The 1-D growth unexpectedly proceeded across surface steps in a self-assembled manner and extended over several 100 nm. The long-range formation of a 1-D quasi-periodic structure on a surface has been theoretically modeled as a 1-D quasi-crystal and the predicted conditions matched the structural parameters obtained by the experimental work here. The quasi-periodic 1-D copper boride system enabled a way to examine 1-D quasi-crystallinity on an actual material.

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Section: Methodsmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

mentioning

confidence: 99%

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Quasi-Periodic Growth of One-Dimensional Copper Boride on Cu(110)

Tsujikawa,

Zhang,

Yamaguchi

et al. 2024

Nano Lett.

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Synthesis of Metalloborophene Nanoribbons on Cu(110)

Weng,

Zhu,

et al. 2024

Adv Funct Materials

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Metalloborophene, characterized by the presence of metal‐centered boron wheels denoted as M©Bn, has garnered considerable attention in recent years due to its versatile properties and potential applications in fields such as electronics, spintronics, and catalysis. However, the experimental verification of metalloborophene is challenging, mainly due to the unconventional 2D boron networks. In this study, scanning tunneling microscopy, X‐ray photoelectron spectroscopy, low energy electron diffraction, and first‐principles calculations are employed to unveil Cu©B8 metalloborophene nanoribbons formed via spontaneous alloying after the deposition of boron on a heated Cu(110) substrate under ultrahigh vacuum condition. The thermodynamically preferred precursor, the anchoring of boron network to metal atoms, and anisotropic lattice mismatch are identified as pivotal factors in the formation of these metalloborophene nanoribbons. This discovery expands the repertoire of 2D materials and offers a potential pathway for the synthesis of other metalloborophenes.

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