Journal Article

FZJ-2019-02843

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Protection of one-dimensional Si chains embedded in Pt(111) and protected by a hexagonal boron-nitride monolayer

Rose, S. ; Nemes-Incze, P. ; Pratzer, M. ; Caciuc, V.FZJ* ; Atodiresei, N.FZJ* ; Morgenstern, M. (Corresponding author)

2019
Elsevier Amsterdam

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Please use a persistent id in citations: doi:10.1016/j.susc.2019.01.013

Abstract: Using scanning tunneling microscopy, we study the regime of submonolayer Si deposition on Pt(111) at 300 K. We find a novel network of one-dimensional chains embedded into the Pt surface. Even in ultrahigh vacuum, these chains disappear within a few hours in favor of clusters on top of the Pt surface. Exposing the chains to different gases reveals that CO effectively induces the lifting. However, the Si chains can be protected by a monolayer of hexagonal BN (h-BN) deposited prior to the Si deposition. Then, the chains survive even an exposure for ten min to air. Interestingly, the Si chains below the h-BN are rotated by 30∘ with respect to the ones on the bare Pt(111). This might be related to the anisotropic elastic modulus of the h-BN on top.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IAS-1)
2. Quanten-Theorie der Materialien (PGI-1)
3. JARA-FIT (JARA-FIT)
4. JARA - HPC (JARA-HPC)

Research Program(s):

1. 143 - Controlling Configuration-Based Phenomena (POF3-143) (POF3-143)
2. Hybrid 2D-based interfaces from first principles (jias1e_20180501) (jias1e_20180501)

Appears in the scientific report 2019

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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