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Journal article Systematic characterization of nanoscale h -BN quantum sensor spots created by helium-ion microscopy

Hao Gu (author)
; ; ; ; ; ; ;
Shinichi Ogawa (author)
;
Yukinori Morita (author)
; ;

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Hao Gu, Moeta Tsukamoto, Yuki Nakamura, Shu Nakaharai, Takuya Iwasaki, Kenji Watanabe, Takashi Taniguchi, Shinichi Ogawa, Yukinori Morita, Kento Sasaki, Kensuke Kobayashi. Systematic characterization of nanoscale h -BN quantum sensor spots created by helium-ion microscopy. Physical Review Applied. 2024, 22 (5), 054026. https://doi.org/10.1103/physrevapplied.22.054026
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(abstract)

The nanosized boron vacancy (V−B) defect spot in hexagonal boron nitride (h-BN) is promising for a local magnetic field quantum sensor. One of its advantages is that a helium-ion microscope can make a spot at any location in an h-BN flake with nanometer accuracy. In this study, we investigate the properties of the created nanosized V−B defect spots by systematically varying three conditions: the helium-ion dose, the thickness of the h-BN flakes, and the substrate on which the h-BN flakes are attached. The physical background of the results obtained is successfully interpreted using Monte Carlo calculations. From the findings obtained here, a guideline for their optimal creation conditions is obtained to maximize its performance as a quantum sensor concerning sensitivity and localization.

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Keyword: quantum sensor, hexagonal boron nitride, helium ion microscopy

Date published: 2024-11-12

Publisher: American Physical Society (APS)

Journal:

  • Physical Review Applied (ISSN: 23317019) vol. 22 issue. 5 054026

Funding:

  • JST
  • CREST JPMJCR23I2
  • Grants-in-Aid for Scientific Research JP24KJ0692
  • Grants-in-Aid for Scientific Research JP24KJ0880
  • Grants-in-Aid for Scientific Research JP22K03524
  • Grants-in-Aid for Scientific Research JP22KJ1059
  • Grants-in-Aid for Scientific Research JP19H00656
  • Grants-in-Aid for Scientific Research JP23K25800
  • Advanced Research Infrastructure for Materials and Nanotechnology in Japan JPMXP1222UT1131
  • JSR Fellowship
  • Grants-in-Aid for Scientific Research JP19H05826
  • Grants-in-Aid for Scientific Research 21H05233
  • Grants-in-Aid for Scientific Research 23H02052
  • Ministry of Education, Culture, Sports, Science and Technology of Japan
  • Mitsubishi Foundation 202310021

Manuscript type: Author's version (Accepted manuscript)

MDR DOI:

First published URL: https://doi.org/10.1103/physrevapplied.22.054026

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Updated at: 2025-01-09 16:30:55 +0900

Published on MDR: 2025-01-09 16:30:55 +0900

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