Low-Temperature Spectroscopic Investigation of Lead-Vacancy Centers in Diamond Fabricated by High-Pressure and High-Temperature Treatment
Low-Temperature Spectroscopic Investigation of Lead-Vacancy Centers in Diamond Fabricated by High-Pressure and High-Temperature Treatment
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高压高温处理金刚石中铅空位中心的低温光谱研究
DOI：
10.1021/acsphotonics.1c00840
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发表时间：
2021
期刊：
影响因子：
7
通讯作者：
T. Iwasaki
中科院分区：
文献类型：
--
作者：
P. Wang;T. Taniguchi;Y. Miyamoto;M. Hatano;T. Iwasaki
本文报道了在高压（7.7GPa）下用Pb离子注入和随后的高温退火（2100 °C）制备的金刚石中铅空位（PbV）中心的光学观察。在5.7K以下的不同温度下，通过光致发光表征了它们的光学性质。我们在550和554 nm处观察到强烈的发射峰，具有约3900 GHz的大分裂。这两条谱线被认为对应于具有分裂基态和激发态的PbV中心的零声子线（ZPL）。当改变温度时，观察到ZPL宽度的立方趋势。我们在一个单一的PbV中心的两条线进行极化测量，显示出几乎正交的偶极极化。这些光学测量结果表明金刚石晶格中PbV心具有D3d对称性。观察到的大的基态分裂显着抑制声子介导的过渡，这导致退相干的电子自旋状态的第IV族色心在金刚石中，导致预期的一个长的自旋相干时间在温度为10.9 K。
We report the optical observation of lead-vacancy (PbV) centers in diamond fabricated by Pb ion implantation and subsequent high-temperature annealing (2100 °C) under high pressure (7.7 GPa). Their optical properties were characterized by photoluminescence at varying temperatures down to 5.7 K. We observed intense emission peaks at 550 and 554 nm, with a large splitting of approximately 3900 GHz. The two lines are thought to correspond to the zero phonon line (ZPL) of PbV centers with split ground and excited states. A cubic trend of the ZPL width was observed while varying the temperature. We performed polarization measurements of the two lines in a single PbV center, showing nearly orthogonal dipole polarizations. These optical measurements strongly indicate that the PbV center possessesD3dsymmetry in the diamond lattice. The observed large ground state splitting significantly suppresses the phonon-mediated transition, which causes decoherence of the electron spin state of the group IV color centers in diamond, leading to the expectation of a long spin coherence time at a temperature ∼9 K.
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影响因子：
4.6
作者：
Iwasaki T;Ishibashi F;Miyamoto Y;Doi Y;Kobayashi S;Miyazaki T;Tahara K;Jahnke KD;Rogers LJ;Naydenov B;Jelezko F;Yamasaki S;Nagamachi S;Inubushi T;Mizuochi N;Hatano M
通讯作者：
Hatano M
影响因子：
16.6
作者：
Fröch JE;Bahm A;Kianinia M;Mu Z;Bhatia V;Kim S;Cairney JM;Gao W;Bradac C;Aharonovich I;Toth M
通讯作者：
Toth M
影响因子：
4.4
作者：
Hizhnyakov, V;Reineker, P
通讯作者：
Reineker, P
影响因子：
3.7
作者：
Meesala, Srujan;Sohn, Young-Ik;Loncar, Marko
通讯作者：
Loncar, Marko
影响因子：
3.7
作者：
Rogers, Lachlan J.;Jahnke, Kay D.;Jelezko, Fedor
通讯作者：
Jelezko, Fedor