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arXiv 2607.03322cond-mat.mtrl-sci
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立方氮化硼中的色心

Color Centers in Cubic Boron Nitride

Linköping University(林雪平大学);Eötvös Loránd University(罗兰大学)

William Stenlund, Joel Davidsson, Viktor Ivády, Rickard Armiento, Igor A. Abrikosov

AI总结:

研究立方氮化硼色心,用密度泛函理论计算生成大规模点缺陷数据集,筛选含s或p元素的点缺陷复合物,经存储、过滤后用混合泛函对有潜力的缺陷精确计算,评估其适用于量子技术的程度。

摘要:

立方氮化硼(c-BN)是一种宽带隙半导体,在电力电子和量子技术中有潜在应用。宽带隙半导体中的色心可用作单光子发射器和量子传感器。在c-BN实验中已测量到几条零声子线但未识别。为系统探测缺陷的组合复杂化学空间,我们为c-BN生成了大规模点缺陷数据集……

英文摘要:

Cubic boron nitride (c-BN) is a wide-bandgap semiconductor (WBGS) with potential applications in both power electronics and quantum technologies. Color centers in WBGS can be used as single photon emitters and quantum sensors. Several zero phonon lines have been measured in c-BN experiment but not yet identified. To systematically probe the combinatorially complex chemical space of defects, we generate a large-scale point defect data set for c-BN. We apply density functional theory calculation implemented in a high-throughput workflow Automatic Defect Analysis and Qualification (ADAQ) to broadly screen for point defect complexes containing s- or p-elements. More than 8000 defects have been calculated in different charge and spin states. The calculated properties are stored in defect database and are then filtered to find defects with properties similar to the NV-center in diamond. More accurate calculations using hybrid functionals are then performed on a selected set of promising defects to further assess their suitability for quantum technology. In particular, we reexamined the ONVB defect which likely explains the GC-2 line. The hybrid calculations also suggest other defect candidates with bright emission, such as two carbon defects and the NaB- defect.

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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