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arXiv 2302.09593cond-mat.mtrl-sciquant-ph
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利用\ extit{ab initio}计算研究金刚石中的氧-空位复合物

Investigation of oxygen-vacancy complexes in diamond by means of \textit{ab initio} calculations

Nima Ghafari Cherati, Gergő Thiering, Ádám Gali

AI总结:

本文通过第一性原理密度泛函理论计算系统研究了金刚石中的氧-空位复合物,发现其高自旋基态排除了作为ST1色心起源的可能性,并表征了一种高自旋亚稳态复合物的磁光性质以供未来实验识别。

摘要:

金刚石中的点缺陷可作为量子比特。近期,氧-空位相关缺陷被提出作为金刚石中可实现长寿命固态量子存储器的所谓ST1色心的起源。受此启发,我们通过第一性原理密度泛函理论计算,系统研究了金刚石中的氧-空位复合物。我们发现所有考虑的氧-空位缺陷在中性电荷态下均具有高自旋基态,这排除了它们作为ST1色心起源的可能性。我们鉴定出一种高自旋亚稳态氧-空位复合物,并表征了其磁光性质,以便在未来实验中进行识别。

英文摘要:

Point defects in diamond may act as quantum bits. Recently, oxygen-vacancy related defects have been proposed to the origin of the so-called ST1 color center in diamond that can realize a long-living solid-state quantum memory. Motivated by this proposal we systematically investigate oxygen-vacancy complexes in diamond by means of first principles density functional theory calculations. We find that all the considered oxygen-vacancy defects have a high-spin ground state in their neutral charge state, which disregards them as an origin for the ST1 color center. We identify a high-spin metastable oxygen-vacancy complex and characterize their magnetooptical properties for identification in future experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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