Micron scale scanning imaging and diagnostics of natural and treated diamond with nitrogen-vacancy centers as a probe

IF 2.8 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Physica B-condensed Matter Pub Date : 2025-05-08 DOI:10.1016/j.physb.2025.417374

Valentina V. Yakovleva , Kirill V. Likhachev , Ivan V. Ilyin , Marina V. Muzafarova , Anna P. Bundakova , Roman A. Babunts , Sergey V. Titkov , Pavel G. Baranov

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Abstract

Micron scale scanning imaging and diagnostics of diamonds of various origin using nitrogen-vacancy NV centers as a probe are presented. Natural plastically deformed crystals, natural cryptocrystalline aggregates (carbonado), treated crystal of type IIa, HPHT diamond bulk crystal and sintered compact were studied with photoluminescence (PL) and optically detected magnetic resonance (ODMR) spectroscopy based on a scanning confocal microscope.

NV⁻ centers carry information about the local properties of diamonds, such as the concentration of NV⁻ centers, their charge states, stresses and strains at the location of the NV⁻ center, the coherent properties of NV⁻ centers, and the interaction of these centers with donor nitrogen. The distribution of local stress and strain was obtained from the splitting of the ODMR line of NV⁻ centers in zero magnetic field. The average distance between NV⁻ center and nitrogen donors (P1 centers) and the local nitrogen concentration were estimated by ratio of satellite and central lines intensities in ODMR spectra in zero magnetic field, where the satellite lines are formed (in case of high concentrations of nitrogen donors) by the interaction of NV⁻ centers with single P1 centers and P1-P1 pairs. The magnetic field application causes an additional ODMR lines splitting which makes it possible to define the degree of mutual microcrystals orientation in cryptocrystalline aggregates. Information on the local distribution of the two NV center charge states, neutrally charged NV⁰ and negatively charged NV⁻ was obtained. The ratio of the NV center charge states is of fundamental interest for the applications of NV centers in sensorics and as an element base for quantum computing.

Confocal 3D scanning of PL- and ODMR-signals of NV centers allows us to reveal their space distribution within natural and treated diamonds and to obtain micron-scale images of internal structure.

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以氮空位中心为探针的天然和处理金刚石微米级扫描成像与诊断

介绍了用氮空位NV中心作为探针对不同来源的金刚石进行微米级扫描成像和诊断。采用基于扫描共聚焦显微镜的光致发光（PL）和光学探测磁共振（ODMR）技术研究了天然塑性变形晶体、天然隐晶聚集体（carbonado）、IIa型处理晶体、HPHT金刚石体晶体和烧结致密体。NV -中心携带有关金刚石局部性质的信息，如NV -中心的浓度、它们的电荷态、NV -中心位置的应力和应变、NV -中心的相干性质以及这些中心与供体氮的相互作用。通过NV -中心的ODMR线在零磁场下的分裂得到了局部应力和应变的分布。NV -中心与氮供体（P1中心）之间的平均距离和局部氮浓度由零磁场下ODMR光谱中卫星线和中心线强度的比值估计，其中卫星线是由NV -中心与单个P1中心和P1-P1对相互作用形成的（在氮供体浓度较高的情况下）。磁场的应用导致额外的ODMR线分裂，这使得在隐晶聚集体中定义相互微晶取向的程度成为可能。得到了两种NV中心电荷态（带中性电荷的NV0和带负电荷的NV−）的局部分布信息。NV中心电荷态的比值对于NV中心在传感学中的应用和作为量子计算的元素基础具有重要意义。对NV中心的PL-和odmr信号进行共聚焦三维扫描，使我们能够揭示它们在天然和处理过的钻石中的空间分布，并获得内部结构的微米级图像。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physica B-condensed Matter 物理-物理：凝聚态物理

CiteScore

4.90

自引率

7.10%

发文量

703

审稿时长

44 days

期刊介绍： Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work. Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas: -Magnetism -Materials physics -Nanostructures and nanomaterials -Optics and optical materials -Quantum materials -Semiconductors -Strongly correlated systems -Superconductivity -Surfaces and interfaces