Highly aligned 2D NV ensemble fabrication from nitrogen-terminated (111) surface

Tetsuya Tatsuishi, Kyotaro Kanehisa, Taisuke Kageura, Takahiro Sonoda, Yuki Hata, Kazuto Kawakatsu, Takashi Tanii, Shinobu Onoda, Alastair Stacey, Shozo Kono, Hiroshi Kawarada

Research output: Contribution to journalArticlepeer-review

Abstract

The nitrogen vacancy (NV) center in diamond is fascinating and has a long spin coherence time. It is applied to magnetic sensors with high sensitivity (∼fT). To achieve a high sensitivity, an aligned NV ensemble is required. This paper presents a new methodology for the fabrication of two-dimensional (2D) aligned NV ensembles by using nitrogen-terminated (111) surface. To realize this, pure diamond growth and high nitrogen coverage on (111) surface were performed. As a result, we have succeeded in producing 2D NV ensembles, with 1 × 109 cm−2. Coherence time T2 was 2.45 μs. Also, Using dynamical decoupling, the decoherence sources were revealed. The alignment ratio along [111] axis was archived 60%. Thermal annealing of the nitrogen termination was introduced to improve the alignment ratio. After that, the alignment rate was up to 73%. This report shows that the aligned 2D NV ensemble has possibility to be applied for multiple quantum devices.

Original languageEnglish
Pages (from-to)127-134
Number of pages8
JournalCarbon
Volume180
DOIs
Publication statusPublished - 2021 Aug 15

Keywords

  • (111) diamond surface
  • Diamond
  • Diamond growth
  • NV center
  • Nitrogen termination

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

Fingerprint Dive into the research topics of 'Highly aligned 2D NV ensemble fabrication from nitrogen-terminated (111) surface'. Together they form a unique fingerprint.

Cite this