| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2023-09-04 |
| タイトル |
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タイトル |
Nitrogen related paramagnetic defects: Decoherence source of ensemble of NV- center |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Chikara Shinei
Masuyama Yuta
Masashi Miyakawa
Abe Hiroshi
Ishii Shuya
Saiki Seiichi
Onoda Shinobu
Takashi Taniguchi
Ohshima Takeshi
Tokuyuki Teraji
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
We investigated spin-echo coherence times T2 of negatively charged nitrogen vacancy center (NV-) ensembles in single crystalline diamond synthesized by either the high-pressure and high-temperature (HPHT) and chemical vapor deposition (CVD) methods. This study specifically examined the magnetic dipole?dipole interaction (DDI) from the various electronic spin baths which are the source of T2 decoherence. Diamond samples with NV- center concentration [NV-] comparable to those of neutral substitutional nitrogen concentration [Ns0] were used for DDI estimation. Results show that the T2 of the ensemble NV- center decreased in inverse proportion to the concentration of nitrogen-related
paramagnetic defects [NPM], being the sum of [Ns0], [NV-], and [NV0], which is a neutrally charged state NV center. This inversely proportional relation between T2 and [NPM] indicates that the nitrogen-related paramagnetic defects of three kinds are the main decoherence source of the ensemble NV- center in single-crystalline diamond. We find that DDI coefficient of NVH- center is significantly
smaller than that of Ns0, the NV0 center, or the NV- center. We ascertained the DDI coefficient of the NV- center ??NV? through experimentation using linear summation of the decoherence rates of each nitrogen-related paramagnetic defect. The obtained value of 89 μs ppm for ??NV? corresponds well to the value estimated from the relation between DDI coefficient and spin multiplicity. |
| 書誌情報 |
AIP Journal of Applied Physics
巻 132,
p. 214402,
発行日 2022-12
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| 出版者 |
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出版者 |
AIP Publishing |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0021-8979 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1063/5.0103332 |
