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Condensed Matter > Mesoscale and Nanoscale Physics
Title: Temperature dependence of photoluminescence intensity and spin contrast in nitrogen-vacancy centers
(Submitted on 12 Jan 2023 (v1), last revised 31 Aug 2023 (this version, v2))
Abstract: We report on measurements of the photoluminescence (PL) properties of single nitrogen-vacancy (NV) centers in diamond at temperatures between 4-300 K. We observe a strong reduction of the PL intensity and spin contrast between ca. 10-100 K that recovers to high levels below and above. Further, we find a rich dependence on magnetic bias field and crystal strain. We develop a comprehensive model based on spin mixing and orbital hopping in the electronic excited state that quantitatively explains the observations. Beyond a more complete understanding of the excited-state dynamics, our work provides a novel approach for probing electron-phonon interactions and a predictive tool for optimizing experimental conditions for quantum applications.
Submission history
From: Patrick Jan Scheidegger [view email][v1] Thu, 12 Jan 2023 15:39:33 GMT (192kb,D)
[v2] Thu, 31 Aug 2023 14:03:24 GMT (1131kb,D)
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