Temperature dependence of charge conversion during NV-center relaxometry in nanodiamond
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2024-04-22 |
| Journal | Physical Review Research |
| Authors | Isabel Cardoso Barbosa, Jonas Gutsche, Dennis Lönard, Stefan Dix, Artur Widera |
| Institutions | University of Kaiserslautern |
| Citations | 3 |
Abstract
Section titled âAbstractâTemperature-dependent nitrogen-vacancy (NV)-center relaxometry is an established tool to characterize paramagnetic molecules near a sensing diamond, gaining momentum in different fields of science. However, recent results indicate that conversion between NV-center charge states impedes these measurements and influences the results for the <a:math xmlns:a=âhttp://www.w3.org/1998/Math/MathMLâ><a:msub><a:mi>T</a:mi><a:mn>1</a:mn></a:msub></a:math> time. While the temperature dependence of NV centersâ <b:math xmlns:b=âhttp://www.w3.org/1998/Math/MathMLâ><b:msub><b:mi>T</b:mi><b:mn>1</b:mn></b:msub></b:math> time is well studied, additional contributions from temperature-dependent charge conversion during the dark time may further affect the measurement results. We combine temperature-dependent relaxometry and fluorescence spectroscopy at varying laser powers to unravel the temperature dependence of charge conversion in nanodiamond for biologically relevant temperatures. While we observe a decrease of the <c:math xmlns:c=âhttp://www.w3.org/1998/Math/MathMLâ><c:msub><c:mi>T</c:mi><c:mn>1</c:mn></c:msub></c:math> time with increasing temperatures, charge conversion remains unaffected by the temperature change. These results allow the temperature-dependent performance of <d:math xmlns:d=âhttp://www.w3.org/1998/Math/MathMLâ><d:msub><d:mi>T</d:mi><d:mn>1</d:mn></d:msub></d:math> relaxometry without further consideration of temperature dependence of charge conversion. Published by the American Physical Society 2024