One dimensional Si-in-Si(001) template for single-atom wire growth

TL;DR

This paper introduces a novel silicon-based template that enables the self-organized growth of long, isolated single-atom metallic wires on silicon surfaces, offering a new approach for nanoscale patterning.

Contribution

The study presents the first detailed characterization of a defect-free, one-dimensional Haiku core reconstruction on hydrogenated Si(001) terraces as a template for single-atom wire growth.

Findings

Successful self-assembly of the Haiku core on Si(001) terraces.

Potential of the template as an alternative to vicinal surfaces.

Detailed structural analysis of the Haiku reconstruction.

Abstract

Single atom metallic wires of arbitrary length are of immense technological and scientific interest. We describe a novel silicon-only template enabling the self-organised growth of isolated micrometer long surface and subsurface single-atom chains. It consists of a one dimensional, defect-free reconstruction - the Haiku core, here revealed for the first time in details - self-assembled on hydrogenated Si(001) terraces, independent of any step edges. We discuss the potential of this Si-in-Si template as an appealing alternative to vicinal surfaces for nanoscale patterning.