The Fermi level in diamond

Collins, A T

doi:10.1088/0953-8984/14/14/307

Cited by 125 publications

(96 citation statements)

References 25 publications

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“…25 In some cases, NV 0 is more stable than NV − , which we attribute to the presence of additional defects that are more stable with an additional electron than the NV center. 26 Laser light may decharge the NV − form of the NV center by causing the transition to the 3 E and 1 E excitations with configuration u 2 v 2 e 1 w N 1 in the doped clusters: the extra electron gets transported to a nearby nitrogen donor.…”

Section: Resultsmentioning

confidence: 80%

“…Collins 25 suggested that electrons in diamond defects are not in thermal equilibrium, so the mechanism for decharging and charging the NV center is of interest. Direct electron tunneling is unlikely to be the mechanism unless the nitrogen to NV center distance is short: the ͗w N ͉H͉e X,Y ͘ molecular orbital matrix element exponentially drops with distance.…”

Section: Resultsmentioning

confidence: 99%

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Electronic structure of the nitrogen-vacancy center in diamond from first-principles theory

Larsson

Delaney

2008

Phys. Rev. B

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Section: Resultsmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Electronic structure of the nitrogen-vacancy center in diamond from first-principles theory

Larsson

Delaney

2008

Phys. Rev. B

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“…The charged state of an NV center depends on the NV −/0 transition level relative to the Fermi level. In diamond doped with nitrogen, the Fermi level is 1.7 eV below the conduction band minimum (CBM) [56,57] , and the NV − level is 2.58 eV below the CBM [58,59]. Thus, in free-standing nitrogen-doped diamond, the NV centers deep in the bulk diamond are likely to be in the NV − state (NV 1 in Fig.…”

Section: B Stability Of Shallow Nv − Centersmentioning

confidence: 99%

“…5a). However, the NV − charged state can be stabilized by controlling the Fermi level and the band bending near the interface via electrical gating [49,[61][62][63], chemical treatment [56,60,64], or by controlling the charge/discharge process by optical excitation [65][66][67], and possibly a combination of the above operations. For example, diamond with PEA oxygen-terminated surface can stabilize shallow NV − centers [60,68].…”

Section: B Stability Of Shallow Nv − Centersmentioning

confidence: 99%

Role of exchange interaction in nitrogen vacancy center based magnetometry

Tan

Jalil

et al. 2016

Phys. Rev. B

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We propose a multilayer device comprising of a thin-film-based ferromagnetic hetero-structure (FMH) deposited on a diamond layer doped with nitrogen vacancy centers (NVC's). We find that when the NVC's are in close proximity (1-2 nm) with the FMH, the exchange energy is comparable to, and may even surpass the magnetostatic interaction energy. This calls for the need to consider and utilize both effects in magnetometry based on NVC's in diamond. As the distance between the FMH and NVC is decreased to the sub-nanometer scale, the exponential increase in the exchange energy suggests spintronic applications of NVC beyond magnetometry, such as detection of spin-Hall effect or spin currents.

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“…In the experiments, the NV center ensembles are produced by high dosage (10 13 cm −2 ) nitrogen ion implantation. However, nitrogen defect, as donor of electron [33][34][35] , could change the level structure in diamond 36,37 . Therefore, high dosage ion implantation might change the charge state conversion process of NV center, which will subsequently affect the results of CSD nanoscopy.…”

mentioning

confidence: 99%

Optical far-field super-resolution microscopy using nitrogen vacancy center ensemble in bulk diamond

Shen

Chen

Yang

et al. 2016

Applied Physics Letters

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We demonstrate an optical far-field super-resolution microscopy using array of nitrogen vacancy centers in bulk diamond as near-field optical probes. The local optical field, which transmits through the nanostructures on the diamond surface, is measured by detecting the charge state conversion of nitrogen vacancy center. And the locating of nitrogen vacancy center with spatial resolution of 6.1 nm is realized with the charge state depletion nanoscopy. The nanostructures on the surface of diamond are then imaged with resolution below optical diffraction limit. The results offer an approach to built a general-purpose optical super-resolution microscopy and a convenient platform for high spatial resolution quantum sensing with nitrogen vacancy center.With stable fluorescence, optically initialized spin state and long spin coherence time, the nitrogen vacancy (NV) center in diamond is a promising candidate for quantum metrology 1,2 . High sensitive detection of electromagnetic field and temperature have been demonstrated with NV center 3-7 , even in living biological cells [8][9][10] . Due to the sub-nanometer size, high spatial resolution is one of the most important advantage of NV based sensors. Typically, it is realized by scanning a specially prepared tip with attached nanodiamond 4,5,11-13 . However, the presence and movement of tips may change the local field distribution at the nanoscale 14,15 . Additionally, the preparation of the tips is usually difficult16 . An alternative method is to replace the scanning tips with highdensity non-scanning array of NV centers, whose relative positions and statuses are obtained through optical far-field microscopy 17-20 . However, the spatial resolution with conventional optical microscopy is limited by the diffraction. Recently, several different types of optical nanoscopy methods for NV center imaging have been developed [21][22][23][24][25][26][27] . Therefore, it is possible to use NV center ensemble arrays as probes to realize sub-diffraction spatial resolution quantum sensing.In particular, the local optical field detection with high spatial resolution is interesting in diverse fields ranging from nanophotonics to biosensing 4,14,15 . In this work, we demonstrate the local optical field detection with subdiffraction resolution using NV center ensemble in bulk diamond as probes, as shown in Fig. 1(a). The light transmitted through nanostructure on the diamond surface is measured with the charge state conversion of nearfield NV center probes. And the high spatial resolution imaging of NV is realized with charge state depletion (CSD) nanoscopy. Subsequently, the sub-diffraction images of the nanostructures on the diamond plate surface are obtained via local optical field detection. A generalpurpose super-resolution Microscopy with Array of Nearfield Probes (MANP) is constructed based on the results. Furthermore, because the NV center is also sensitive to electromagnetic fields, temperature and pressure 28 , the present technique provides a convenient method to establis...

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The Fermi level in diamond

Cited by 125 publications

References 25 publications

Electronic structure of the nitrogen-vacancy center in diamond from first-principles theory

Electronic structure of the nitrogen-vacancy center in diamond from first-principles theory

Role of exchange interaction in nitrogen vacancy center based magnetometry

Optical far-field super-resolution microscopy using nitrogen vacancy center ensemble in bulk diamond

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