Abstract
Significant attention has been recently focused on the realization of high precision nanothermometry using the spin-resonance temperature shift of the negatively charged nitrogen-vacancy (NV-) center in diamond. However, the precise physical origins of the temperature shift is yet to be understood. Here, the shifts of the center's optical and spin resonances are observed and a model is developed that identifies the origin of each shift to be a combination of thermal expansion and electron-phonon interactions. Our results provide insight into the center's vibronic properties and reveal implications for NV- thermometry.
Original language | English |
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Article number | 041201 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 90 |
Issue number | 4 |
DOIs | |
Publication status | Published - 28 Jul 2014 |