Imaging the Acceptor Wave Function Anisotropy in Silicon.

Authors

Manuel Siegl, Julian Zanon, Joseph Sink, Adonai Rodrigues da Cruz, Holly Hedgeland, Neil J Curson, Michael E Flatté, Steven R Schofield

Published in

Nano letters. Aug 21, 2025. Epub Aug 21, 2025.

Abstract

We present the first scanning tunneling microscopy (STM) image of hydrogenic acceptor wave functions in silicon. These acceptor states appear as square-ring-like features in STM images and originate from near-surface defects introduced by high-energy bismuth implantation into a silicon (001) wafer. Scanning tunneling spectroscopy confirms the formation of a p-type surface. Effective-mass and tight-binding calculations provide an excellent description of the observed square-ring-like features, confirming their acceptor character and attributing their symmetry to the light- and heavy-hole band degeneracy in silicon. A detailed understanding of the energetic and spatial properties of acceptor wave functions in silicon is essential for engineering large-scale acceptor-based quantum devices.

PMID:
40839833
Bibliographic data and abstract were imported from PubMed on 22 Aug 2025.

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