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arXiv · 2209.13735

Carbon-based single photon emitters in hexagonal boron nitride with triplet ground state

Fernanda Pinilla·Nicolas Vasquez·Jerónimo R. Maze·Carlos Cárdenas·Francisco Munoz
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Abstract

Most single photon emitters in hexagonal boron nitride has been identified as carbon-based defects. These defects, when forming a donor-acceptor pair have spin $S\leq \frac{1}{2}$. By means of density functional calculations, we show that two non-adjacent carbon substitutional defects of the same type (i.e. C$_\mathrm{B}$-C$_\mathrm{B}$, and C$_\mathrm{N}$-C$_\mathrm{N}$), can have a triplet ground state. In particular, one of such defects has a zero phonon line energy of 2.5 eV, and its triplet state is nearly 0.5 eV more stable than its singlet.

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Fernanda Pinilla, Nicolas Vasquez, Jerónimo R. Maze, Carlos Cárdenas, Francisco Munoz. 2022-09-27. Carbon-based single photon emitters in hexagonal boron nitride with triplet ground state. https://doi.org/10.1088/1402-4896%2Faceb1d

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