Recombination-enhanced diffusion of self-interstitial atoms and vacancy–interstitial recombination in diamond

Newton, Mark E.; Campbell, B.; Twitchen, Daniel J.; Baker, J M; Anthony, T. R.

doi:10.1016/s0925-9635(01)00623-9

Cited by 63 publications

(50 citation statements)

References 11 publications

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“…[159] and ∼ 1.5 vacancies/e -/cm in Ref. [169] and theoretically to be ∼ 2.2 vacancies/e -/cm [174].…”

mentioning

confidence: 71%

“…ESR measurements of the interstitial carbon color center, R2, suggest that some recombination occurs during irradiation unless the diamond is cooled well below room temperature [169,159] (not the case here), and that during annealing the remaining R2 centers become mobile at a threshold temperature in the 400 − 700…”

mentioning

confidence: 88%

“…• C range [169,166,159]. Samples 9 and 10 are actually two halves of the same diamond, but their rst annealing was done at dierent temperatures: 500 • C and 800…”

mentioning

confidence: 99%

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Optical magnetometry with nitrogen-vacancy centers in diamond

Acosta¹

2013

Optical Magnetometry

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Precision measurement of magnetic elds is at the heart of many important analytic techniques in materials, geology, biology, medicine, security, space, and the physical sciences. These applications require operation under a wide range of specications regarding sensitivity, spatial resolution, bandwidth, scalability, and temperature. In this work we have developed the enabling technology for magnetometers based on nitrogen-vacancy (NV) defects in diamond which promise to cover a wider portion of this parameter space than existing sensors. We have studied how to prepare diamond material optimized for magnetometry, and we observed the basic optical and spin properties of the NV centers. Using a novel scheme inspired by new information about NV centers gathered from these studies, we constructed a sensor which improved on the state-of-the-art in a number of areas. Finally, we outline a plan for improving these sensors to study micro-and nano-scale magnetic phenomena currently inaccessible using existing technology.

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“…[159] and ∼ 1.5 vacancies/e -/cm in Ref. [169] and theoretically to be ∼ 2.2 vacancies/e -/cm [174].…”

mentioning

confidence: 71%

mentioning

confidence: 88%

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Optical magnetometry with nitrogen-vacancy centers in diamond

Acosta¹

2013

Optical Magnetometry

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“…Vacancies can also recombine with self-interstitials 27,35,36 (implantation produces one interstitial carbon for each vacancy), can join together to form extended defects 37 , or can become trapped at dislocations or at the surface 38 . While numerous annealing experiments have been performed, and vacancy migration over long distances in the horizontal direction has been observed at 1400…”

Section: Introductionmentioning

confidence: 99%

Vertical distribution of nitrogen-vacancy centers in diamond formed by ion implantation and annealing

et al. 2009

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Etching experiments were performed that reveal the vertical distribution of optically active nitrogen-vacancy (NV) centers in diamond created in close proximity to a surface through ion implantation and annealing. The NV distribution depends strongly on the native nitrogen concentration, and spectral measurements of the neutral and negatively-charged NV peaks give evidence for electron depletion effects in lower-nitrogen material. The results are important for potential quantum information and magnetometer devices where NV centers must be created in close proximity to a surface for coupling to optical structures.

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“…Systematic modeling suggests that split <100> interstitial is the most stable configuration of this defect, which is known as the R2 center [56,57]. The ground state of the center has a D 2d…”

Section: Vacancy and Self Interstitialmentioning

confidence: 99%

Novel Single Photon Emitters Based on Color Centers in Diamond

Aharonovich¹,

Castelletto²,

Prawer³

2011

AIP Conference Proceedings

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Exploitation of emerging quantum technologies requires efficient fabrication of key building blocks. Single photon sources are one of these fundamental constituents that are presently pushing the bounds of existing materials and fabrication techniques. Color centers in diamond are very attractive in this respect since they are the only photostable solid-state single photon emitters operating at room temperature known to date.The Nitrogen-Vacancy (NV) complex is one example of such an optical center and has been subject to intensive research due to the availability of optical readout of its individual electronic spin state. However, the NV center has fundamental limitations: strong phonon coupling of the excited state which results in a broad photoluminescence spectrum (~ 100 nm) of which the zero-phonon line makes up only 4%. Emission of single photons in the zero phonon line is then extremely weak, typically on the order of a few thousands of photons per second. Such count rates are insufficient for the realization of advanced quantum information processing protocols.To move beyond the limitations of the NV there is an emerging need to identify and fabricate novel diamond based single photon emitters with improved photo-physical characteristics. Development of such emitters is the main goal of this thesis.We first concentrate on the recent progress in materials science and fabrication techniques of high quality nanodiamond crystals. We demonstrate the ability to grow high quality, submicron sized diamond crystals with a control over their final size and density using a microwave assisted chemical vapor deposition.We then study two methodologies to engineer diamond based single photon emitters in the grown nanodiamonds. In the first, nickel is implanted into the substrate onto which the nanocrystals are subsequently grown. During the diamond growth, the substrate is slightly etched and the nickel atoms diffuse and incorporate into the growing crystals. In the second we employ direct ion implantation of nickel into already deposited individual diamond nanocrystals. Optical and correlation spectroscopy measurements reveal that these methodologies are effective to fabricate nickel related single photon emitters, with zero phonon lines centered in the near infra-red and a short excited state lifetime (~3 ns).ii Furthermore, the ability of diamond to host various luminescence centers prompted the discovery of a new class of ultra bright single photon emitters. These new emitters found in diamond crystals grown on sapphire substrate and assigned to chromium, which is present in the substrate and incorporated into the crystal during the growth. Nanodiamonds hosting these centers deliver outstanding performance such as narrow photoluminescence in the near infra-red and ultra bright single photon emission with count rate of ~ 3.2×10 6 counts/s -the brightest single photon source known to date.Importantly, some of the emitters exhibit a photon statistics without any photon bunching at saturation, indicating a two-...

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Recombination-enhanced diffusion of self-interstitial atoms and vacancy–interstitial recombination in diamond

Cited by 63 publications

References 11 publications

Optical magnetometry with nitrogen-vacancy centers in diamond

Optical magnetometry with nitrogen-vacancy centers in diamond

Vertical distribution of nitrogen-vacancy centers in diamond formed by ion implantation and annealing

Novel Single Photon Emitters Based on Color Centers in Diamond

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