Dimensionality-Driven Charge Stabilization of Group-IV Color Centers in Diamond Ultrathin Films.

Authors

Jijun Huang, Bing Huang, Song Li

Published in

Nano letters. Volume 26. Issue 42. Pages 14656-14663. Oct 28, 2026.

Abstract

Neutral group-IV vacancy (XV, X = Si, Ge, Sn, and Pb) centers in diamond are promising solid-state spin-photon interfaces owing to favorable spin coherence and inversion-symmetry-protected optical transitions. However, stabilizing their neutral charge state typically requires stringent Fermi-level engineering in high-purity boron-doped diamond, which poses significant materials-growth challenges. Here, dimensional confinement in diamane offers an alternative for charge-state stabilization without intentional doping. Our results show that diamane thickness and surface chemical termination cooperatively tune the electronic structures of XV centers, while their neutral-state thermodynamic stability is enhanced. The zero-field splitting and spin-orbit coupling of XV centers could be tuned while largely preserving their optical transition energies. We find hydrogenated diamane offers the best balance between charge-state stability and magneto-optical performance. More broadly, our findings establish dimensional confinement as a general strategy for engineering the charge, optical, and spin properties of solid-state quantum defects.

PMID:
42949391
Bibliographic data and abstract were imported from PubMed on 28 Oct 2026.

Read full publication at:
Please sign in to see all details.

Stats

1-terrible, 9-excellent. How would you rate this publication? Sign in in to submit your rating.

Post a comment

You need to be signed in to post comments. You can sign in here.

Comments

There are no comments yet.