高能He+辐照在块体h-BN中产生的硼空位

中文摘要 AI 辅助

虽然金刚石和其他三维晶体中的色心如今已成为多种传感器的关键元件，但二维材料中的色心正在迅速发展，并有望实现高科技应用。二维材料中一个有趣的色心是六方氮化硼（h-BN）中的带负电荷的硼空位，它已经显示出在磁测量方面的潜力，但硼空位的可靠制备仍然具有挑战性。在此，我们展示了通过注入约1 MeV的氦离子在块体h-BN中制备带负电荷的硼空位色心，并通过特征光致发光和光学检测磁共振予以确认。共振线宽为180 MHz，并表现出预期的共振线塞曼位移。测量了色心沿h-BN晶体c轴的深度，并与基于“物质中离子射程与阻止”模型（SRIM）的预测进行了比较。实验值与模型预测在报告的误差范围内一致，因为它们的1σ区间重叠，尽管实验显示出更大的深度和更宽的分布。

英文摘要

While color centers in diamond and other three-dimensional crystals are nowadays key elements of several types of sensors, color centers in two-dimensional materials are rapidly developing and promise high-tech applications. One of the interesting centers in 2D materials is the negatively charged boron vacancy in hexagonal boron nitride (h-BN), which has already shown some potential for magnetometry, but the reliable creation of boron vacancies remains challenging. Here, we demonstrate the fabrication of negatively charged boron vacancy color centers in bulk h-BN via implantation of helium ions at ~1 MeV, as confirmed by characteristic photoluminescence and optically detected magnetic resonance. The resonance has a width of 180 MHz and exhibits the expected Zeeman shift of the resonance lines. The depth of the color center along the c-axis of the h-BN crystal was measured and compared with predictions from Stopping and Range of Ions in Matter modeling. The experimental value and the modeled prediction are consistent within the reported uncertainties, as their 1σ intervals overlap, although the experiment shows a greater depth and a wider distribution.

发表机构

• P.N. Lebedev Physical Institute of the Russian Academy of Sciences（俄罗斯科学院列别杰夫物理研究所）
• Russian Quantum Center（俄罗斯量子中心）
• Moscow Institute of Physics and Technology (National Research University)（莫斯科物理技术学院（国立研究型大学））
• LLC “Diamond Sensors”（钻石传感器有限责任公司）
• Joint Institute for Nuclear Research（杜布纳联合核研究所）
• IDDA Department of Nuclear Research（阿塞拜疆国家科学院原子能研究所核研究部）
• Dubna State University（杜布纳国立大学）

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