论文标题

钻石中的镁斑点光学中心

Magnesium-vacancy optical centers in diamond

论文作者

Corte, Emilio, Andrini, Greta, Hernández, Elena Nieto, Pugliese, Vanna, Costa, Ângelo, Magchiels, Goele, Moens, Janni, Tunhuma, Shandirai Malven, Villarreal, Renan, Pereira, Lino M. C., Vantomme, André, Correia, João Guilherme, Bernardi, Ettore, Traina, Paolo, Degiovanni, Ivo Pietro, Moreva, Ekaterina, Genovese, Marco, Tchernij, Sviatoslav Ditalia, Olivero, Paolo, Wahl, Ulrich, Forneris, Jacopo

论文摘要

我们提供了在人工钻石中植入30-100 keV mg+离子后制造的光学缺陷中心的结构和光致发光特性的第一个系统表征。通过在室温和800°C下进行的27mg植入技术研究了MG相关缺陷的结构构型,从而可以在与MGV复合物的分裂结构兼容的地点兼容MG原子(〜30-42%)的主要部分。在替代部位发现了较小的Mg原子(约13-17%)。在组成5 K和300 K之间的温度范围内研究了光致发光的发射,并提供了MGV相关发射特性的详细图片,并揭示了先前未报告的光谱特征的发生。还研究了MGV中心的光兴奋性,这是光激发波长的函数,从而确定了光稳定和强烈发射的最佳条件。结果将在初步实验数据和文献中可用的理论模型的背景下进行讨论,并具有吸引人的观点,可利用MGV量子信息处理应用程序的可调性能。

We provide the first systematic characterization of the structural and photoluminescence properties of optically active defect centers fabricated upon implantation of 30-100 keV Mg+ ions in artificial diamond. The structural configurations of Mg-related defects were studied by the emission channeling technique for 27Mg implantations performed both at room-temperature and 800 °C, which allowed the identification of a major fraction of Mg atoms (~30-42%) in sites which are compatible with the split-vacancy structure of the MgV complex. A smaller fraction of Mg atoms (~13-17%) was found on substitutional sites. The photoluminescence emission was investigated both at the ensemble and individual defect level in a temperature range comprised between 5 K and 300 K, offering a detailed picture of the MgV-related emission properties and revealing the occurrence of previously unreported spectral features. The optical excitability of the MgV center was also studied as a function of the optical excitation wavelength enabling to identify the optimal conditions for photostable and intense emission. The results are discussed in the context of the preliminary experimental data and the theoretical models available in the literature, with appealing perspectives for the utilization of the tunable properties of the MgV center for quantum information processing applications.

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