Spin and Optical Properties of Silicon Vacancies in Silicon Carbide − A Review

Spin and Optical Properties of Silicon Vacancies in Silicon Carbide − A Review
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碳化硅中硅空位的自旋和光学性质 â 综述

DOI:
10.1002/pssb.201700258
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发表时间:
2018
期刊:
physica status solidi (b)
影响因子:
--
通讯作者:
G. V. Astakhov
G. V. Astakhov
中科院分区:
--
文献类型:
--
作者:
S. A. Tarasenko;A. V. Poshakinskiy;D. Simin;V. A. Soltamov;E. N. Mokhov;P. G. Baranov;V. Dyakonov;G. V. Astakhov

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我们讨论了与碳化硅中的硅空位有关的自旋3/2中心的精细结构和自旋动力学。这些中心具有光学可寻址的自旋态,这使得它们在量子技术方面非常有希望。结果表明,自旋中心的精细结构对机械压力、外加磁场和电场、温度变化等高度敏感,这可以用于有效的室温传感,特别是通过纯光学手段或通过光学检测的磁共振。讨论了在外加磁场中基于能级反交叉的自旋态混合的磁学和测温的实验成果及其内在的微观机制。我们还讨论了与环境相互作用引起的空位系综中的自旋涨落。
We discuss the fine structure and spin dynamics of spin‐3/2 centers associated with silicon vacancies in silicon carbide. The centers have optically addressable spin states which makes them highly promising for quantum technologies. The fine structure of the spin centers turns out to be highly sensitive to mechanical pressure, external magnetic and electric fields, temperature variation, etc., which can be utilized for efficient room‐temperature sensing, particularly by purely optical means or through the optically detected magnetic resonance. We discuss the experimental achievements in magnetometry and thermometry based on the spin state mixing at level anticrossings in an external magnetic field and the underlying microscopic mechanisms. We also discuss spin fluctuations in an ensemble of vacancies caused by interaction with environment.
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