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EDP Sciences, EPJ Quantum Technology, 1(2), 2015

DOI: 10.1140/epjqt/s40507-015-0035-z

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Longitudinal spin relaxation in nitrogen-vacancy ensembles in diamond

Journal article published in 2015 by Mariusz Mrózek, Daniel Rudnicki, Andrey Jarmola, Pauli Kehayias ORCID, Dmitry Budker ORCID, Wojciech Gawlik
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We present an experimental study of the longitudinal electron-spin relaxation of ensembles of negatively charged nitrogen-vacancy (NV − ) centers in diamond. The measurements were performed with samples having different NV − concentrations and at different temperatures and magnetic fields. We found that the relaxation rate 1/T1 increases when transition frequencies in NV − centers with different orientations become degenerate and interpret this as cross-relaxation caused by dipole-dipole interaction.