| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-04-09 |
| タイトル |
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タイトル |
Homogeneous spin-dephasing time of NV- centre in millimetre-scale 12C- enriched high-pressure high-temperature diamond crystals |
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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
Abe Hiroshi
Masashi Miyakawa
Takashi Taniguchi
Ohshima Takeshi
Tokuyuki Teraji
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
Negatively charged nitrogen vacancy (NV ) centres in diamond crystals are promising colour centres for high-sensitivity quantum sensors. A long dephasing time (T > 10 μs) is essential for achieving increased sensitivity and higher uniformity of T in millimetre- scale diamond is strongly desired for femto-tesla weak magnetic field detection. High uniformity of T for NV centres is achieved herein. The median value of T , <T >, in the C-enriched high-pressure, high-temperature (HPHT) grown diamond with a nitrogen concentration of 1.3 ± 0.4 ppm is 4.5 μs. The variance of T is only 10% over a millimetre-scale region (1.1 × 1.1 mm ) within the 0.4 mm thick {111} growth sector. <T > is ~2/3 times the value limited by the dipole-dipole interaction from the electron-spin bath of nitrogen impurities, suggesting that the residual strain gradient in the HPHT diamond crystal partially limits T . Reducing the strain gradient in diamond crystals provide a pathway to achievement of high sensitivity magnetometry using NV quantum sensing. |
| 書誌情報 |
communications materials
巻 6,
号 66,
p. 1-9,
発行日 2025-04
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| 出版者 |
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出版者 |
SPRINGER NATURE |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1038/s43246-025-00782-7 |
