Correlative nanoscale imaging of strained hBN spin defects
- URL: http://arxiv.org/abs/2203.10075v1
- Date: Fri, 18 Mar 2022 17:42:09 GMT
- Title: Correlative nanoscale imaging of strained hBN spin defects
- Authors: David Curie, Jaron T. Krogel, Lukas Cavar, Abhishek Solanki, Pramey
Upadhyaya, Tongcang Li, Yun-Yi Pai, Michael Chilcote, Vasudevan Iyer, Alex
Puretzky, Ilia Ivanov, Mao-Hua Du, Fernando Reboredo, Benjamin Lawrie
- Abstract summary: Spin defects like the negatively charged boron vacancy color center ($V_B-$) in hexagonal boron nitride (hBN) may enable new forms of quantum sensing with near-surface defects in layered van der Waals heterostructures.
We reveal the effect of strain associated with creases in hBN flakes on $V_B-$ and $V_B$ color centers in hBN with correlative cathodoluminescence and photoluminescence microscopies.
- Score: 42.60602838972598
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Spin defects like the negatively charged boron vacancy color center ($V_B^-$)
in hexagonal boron nitride (hBN) may enable new forms of quantum sensing with
near-surface defects in layered van der Waals heterostructures. Here, we reveal
the effect of strain associated with creases in hBN flakes on $V_B^-$ and $V_B$
color centers in hBN with correlative cathodoluminescence and photoluminescence
microscopies. We observe strong localized enhancement and redshifting of the
$V_B^-$ luminescence at creases, consistent with density functional theory
calculations showing $V_B^-$ migration toward regions with moderate uniaxial
compressive strain. The ability to manipulate these spin defects with highly
localized strain offers intriguing possibilities for future 2D quantum sensors.
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