Temperature shift of magnetic-field-dependent photoluminescence features of nitrogen-vacancy ensembles in diamond

• URL: http://arxiv.org/abs/2409.03608v2
• Date: Mon, 23 Sep 2024 09:27:28 GMT
• Title: Temperature shift of magnetic-field-dependent photoluminescence features of nitrogen-vacancy ensembles in diamond
• Authors: Irena Rodzoń, Xue Zhang, Viktor Ivády, Huijie Zheng, Arne Wickenbrock, Dmitry Budker,
• Abstract summary: We study the thermal variability of many different features visible in a wide range of magnetic fields. A deeper insight into the thermal behavior of a wide array of the features may come with important consequences for various applications.
• Score: 6.163508788139786
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recently significant attention has been paid to magnetic-field-dependent photoluminescence (PL) features of the negatively charged nitrogen-vacancy (NV) centers in diamond. These features are used for microwave-free sensing and are indicative of the spin-bath properties in the diamond sample. Examinating the temperature dependence of the PL features allows to identify both temperature dependent and independent features, and to utilize them in diamond-based quantum sensing and dynamic nuclear polarization applications. Here, we study the thermal variability of many different features visible in a wide range of magnetic fields. To this end, we first discuss the origin of the features and tentatively assign the previously unidentified features to cross relaxation of NV center containing multi-spin systems. The experimental results are compared with theoretically predicted temperature shifts deduced from a combination of thermal expansion and electron-phonon interactions. A deeper insight into the thermal behavior of a wide array of the features may come with important consequences for various applications in high-precision NV thermometry, gyroscopes, solid-state clocks, and biomagnetic measurements.

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