A new structural model for the Si(331)-(12x1) reconstruction

TL;DR

This paper proposes a new atomic-scale structural model for the Si(331)-(12x1) surface reconstruction, revealing universal building blocks shared with other silicon surfaces through advanced imaging and calculations.

Contribution

It introduces a novel structural model based on high-resolution microscopy, diffraction, and first-principles calculations, unifying silicon surface reconstructions.

Findings

Shared elementary building blocks with Si(110) surface

Pentamer as a universal reconstruction unit

Validated model with experimental and computational data

Abstract

A new structural model for the Si(331)-(12x1) reconstruction is proposed. Based on scanning tunneling microscopy images of unprecedented resolution, low-energy electron diffraction data, and first-principles total-energy calculations, we demonstrate that the reconstructed Si(331) surface shares the same elementary building blocks as the Si(110)-(16x2) surface, establishing the pentamer as a universal building block for complex silicon surface reconstructions.