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h-BN/Ru(0 0 0 1) nanomesh: A 14-on-13 superstructure with 3.5 nm periodicity


Martoccia, D; Brugger, T; Björck, M; Schlepütz, C M; Pauli, S A; Greber, T; Patterson, B D; Willmott, P R (2010). h-BN/Ru(0 0 0 1) nanomesh: A 14-on-13 superstructure with 3.5 nm periodicity. Surface Science, 604(5-6):L16-L19.

Abstract

The structure of epitaxially grown hexagonal boron nitride (h-BN) on the surface of a Ru(0 0 0 1) single crystal was investigated using surface X-ray diffraction, which showed the system to form a commensurate 14-on-13 superstructure. This result disagrees with previous reports on superstructures of the same system and arguments based on simple thermal expansion coefficient calculations. We argue that the larger observed superstructure forms because of the strong bonding of h-BN to Ru. In comparison to h-BN/Rh(1 1 1) it can accommodate more induced lateral in-plane strain- or lock-in energy over larger regions (referred to as the holes) within the superstructure, which itself can consequently become larger.

Abstract

The structure of epitaxially grown hexagonal boron nitride (h-BN) on the surface of a Ru(0 0 0 1) single crystal was investigated using surface X-ray diffraction, which showed the system to form a commensurate 14-on-13 superstructure. This result disagrees with previous reports on superstructures of the same system and arguments based on simple thermal expansion coefficient calculations. We argue that the larger observed superstructure forms because of the strong bonding of h-BN to Ru. In comparison to h-BN/Rh(1 1 1) it can accommodate more induced lateral in-plane strain- or lock-in energy over larger regions (referred to as the holes) within the superstructure, which itself can consequently become larger.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2010
Deposited On:15 Feb 2011 20:50
Last Modified:07 Dec 2017 07:21
Publisher:Elsevier
ISSN:0039-6028
Publisher DOI:https://doi.org/10.1016/j.susc.2010.01.003

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