Color Centers in Hexagonal Boron Nitride Monolayers: A Group Theory and Ab Initio Analysis
By M. Abdi, J. Chou, Á. Gali, Martin Bodo Plenio. 2017
246 citations recorded by the source corpus.
We theoretically study physical properties of the most promising color center candidates for the recently observed single-photon emissions in hexagonal boron nitride (h-BN) monolayers. Through our group theory analysis combined with density functional theory (DFT) calculations we provide several pieces of evidence that the electronic properties of the color centers match the characters of the experimentally observed emitters. We calculate the symmetry-adapted multielectron wave functions of the defects using group theory methods and analyze the spin–orbit and spin–spin interactions in detail. We also identify the radiative and nonradiative transition channels for each color center. An advanced ab initio DFT method is then used to compute energy levels of the color centers and their zero-phonon-line (ZPL) emissions. The computed ZPLs, the profile of excitation and emission dipole polarizations, and the competing relaxation processes are discussed and matched with the observed emission lines. By providing e...
Subfields: Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/39b8fb661e103beea379e670f5b6cdfe48223c90
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Citations in the corpus
- Compact Cavity-Enhanced Single-Photon Generation with Hexagonal Boron Nitride (2019, background): “In spite of large experimental research efforts and theoretical calculations[23, 24], the exact nature of the defects yet has to be determined.”