Time-averaging within the excited state of the nitrogen-vacancy centre in diamond
arXiv:0902.2256 · doi:10.1088/1367-2630/11/6/063007
Abstract
The emission intensity of diamond samples containing nitrogen-vacancy centres are measured as a function of magnetic field along a <111> direction for various temperatures. At low temperatures the responses are sample and stress dependent and can be modeled in terms of the previous understanding of the 3E excited state fine structure which is strain dependent. At room temperature the responses are largely sample and stress independent, and modeling involves invoking a strain independent excited state with a single zero field splitting of 1.42 GHz. The change in behaviour is attributed to a temperature dependent averaging process over the components of the excited state orbital doublet. It decouples orbit and spin and at high temperature the spin levels become independent of any orbit splitting. Thus the models can be reconciled and the parameters for low and high temperatures are shown to be consistent.
16 pages, 10 figures; fonts fixed and reference corrected
References in corpus (9)
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- Ultrabright Linearly Polarized Photon Generation from a Nitrogen Vacancy Center in a Nanocube Dimer Antenna
- Excited-state optically detected magnetic resonance of spin defects in hexagonal boron nitride
- Cooling a Mechanical Resonator with a Nitrogen-Vacancy Center Ensemble Using a Room Temperature Excited State Spin-Strain Interaction
- All optical control of a single electron spin in diamond
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- Temperature Dependent Photophysics of Single NV Centers in Diamond
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- Radiofrequency response of the optically detected level anti-crossing signal in NV color centers in diamond in zero and weak magnetic fields
- Nuclear spin relaxation in solid state defect quantum bits via electron-phonon coupling in their optical excited state
- Elucidating the Inter-system Crossing of the Nitrogen-Vacancy Center up to Megabar Pressures