CVD diamond for spintronics

Markham, Matthew; Dodson, Joe; Scarsbrook, G. A.; Twitchen, Daniel J.; Balasubramanian, Gopalakrishnan; Jelezko, Fedor; Wrachtrup, Jörg

doi:10.1016/j.diamond.2010.11.016

Cited by 70 publications

(67 citation statements)

References 75 publications

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“…17) than the limit of natural abundance diamond (0.65 ms in Ref. 15), being dominated by the paramagnetic defect term in Eq. (1).…”

Section: Introductionmentioning

confidence: 90%

“…1(b). The triplet and doublet hyperfine structures observed in the ODMR spectra between |m s = 0 and |m s = +1 indicate a single 14 NV − with the hyperfine constant A = 2.2 MHz (bottom) and a single 15 NV − with A = 3.1 MHz (top), respectively ( Fig. 1(b)).…”

Section: A Spin Coherence Times Of Single Nvmentioning

confidence: 98%

“…In a natural abundance sample, T 2 of NV − at RT is ∼ 0.65 ms, limited by magnetic noise from the 13 C nuclear spin bath. 15 By depleting the 13 C content (99.7%…”

Section: Introductionmentioning

confidence: 99%

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Extending spin coherence times of diamond qubits by high-temperature annealing

et al. 2013

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Spins of negatively charged nitrogen-vacancy (NV − ) defects in diamond are among the most promising candidates for solid-state qubits. The fabrication of quantum devices containing these spin-carrying defects requires position-controlled introduction of NV − defects having excellent properties such as spectral stability, long spin coherence time, and stable negative charge state. Nitrogen ion implantation and annealing enable the positioning of NV − spin qubits with high precision, but to date, the coherence times of qubits produced this way are short, presumably because of the presence of residual radiation damage. In the present work, we demonstrate that a high temperature annealing at 1000• C allows 2 millisecond coherence times to be achieved at room temperature. These results were obtained for implantation-produced NV − defects in a high-purity, 99.99% 12 C enriched single crystal chemical vapor deposited diamond. We discuss these remarkably long coherence times in the context of the thermal behavior of residual defect spins. [Published in Physical Review B 88, 075206 (2013)]

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“…17) than the limit of natural abundance diamond (0.65 ms in Ref. 15), being dominated by the paramagnetic defect term in Eq. (1).…”

Section: Introductionmentioning

confidence: 90%

Section: A Spin Coherence Times Of Single Nvmentioning

confidence: 98%

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Extending spin coherence times of diamond qubits by high-temperature annealing

et al. 2013

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“…For NV center spins, this dephasing time is limited by hyperfine coupling between the electron and nuclear spins of 13 C in the diamond lattice. For a natural concentration of 13 C of 1.1% it is around 0.6 ms [24]. Reducing 13 C down to levels below 0.01% has yielded T 2 values [2], SQUID [6], MRFM [7] and the NV center in diamond [9].…”

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confidence: 99%

Single spin magnetic resonance

Wrachtrup

Finkler

2016

Journal of Magnetic Resonance

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Different approaches have improved the sensitivity of either electron or nuclear magnetic resonance to the single spin level. For optical detection it has essentially become routine to observe a single electron spin or nuclear spin. Typically, the systems in use are carefully designed to allow for single spin detection and manipulation, and of those systems, diamond spin defects rank very high, being so robust that they can be addressed, read out and coherently controlled even under ambient conditions and in a versatile set of nanostructures. This renders them as a new type of sensor, which has been shown to detect single electron and nuclear spins among other quantities like force, pressure and temperature. Adapting pulse sequences from classic NMR and EPR, and combined with high resolution optical microscopy, proximity to the target sample and nanoscale size, the diamond sensors have the potential to constitute a new class of magnetic resonance detectors with single spin sensitivity. As diamond sensors can be operated under ambient conditions, they offer potential application across a multitude of disciplines. Here we review the different existing techniques for magnetic resonance, with a focus on diamond defect spin sensors, showing their potential as versatile sensors for ultra-sensitive magnetic resonance with nanoscale spatial resolution.

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“…Алмазные материалы также могут быть получены с помощью газофазного химического осаждения (ГФХО) в виде поликристалли-ческих пленок. Однако получение этим методом матери-алов, подходящих для квантово-оптических приложений (т. е. получение алмаза высокого качества с небольшой плотностью структурных дефектов и примесей), также требует значительных усилий (см., например, [10]). …”

Section: Introductionunclassified

Люминесцентные Свойства Монокристаллов Алмаза Пирамидальной Формы

Алексеев¹,

Туякова²,

Образцова³

et al. 2016

Физика Твердого Тела

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Проведено исследование люминесцентных свойств иглоподобных кристаллов алмаза, полученных путем селективного окисления текстурированных поликристаллических алмазных пленок. Алмазные пленки выращены методом химического газофазного осаждения из метан-водородной смеси, активированной разрядом постоянного тока. Для отдельных иглоподобных кристаллов получены спектры фото- и катодолюминесценции, а также пространственное распределение интенсивности излучения на различных длинах волн. На основании полученных спектральных характеристик сделаны выводы о наличии в их структуре оптически активных дефектов, содержащих примеси азота и кремния, а также о существенном влиянии структурных дефектов на спектры люминесценции. Работа выполнена при финансовой поддержке Российского научного фонда (проект N 14-12-00511) и Программы поддержки молодых ученых Президента РФ (грант МК-6201.2014.2).

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CVD diamond for spintronics

Cited by 70 publications

References 75 publications

Extending spin coherence times of diamond qubits by high-temperature annealing

Extending spin coherence times of diamond qubits by high-temperature annealing

Single spin magnetic resonance

Люминесцентные Свойства Монокристаллов Алмаза Пирамидальной Формы

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