Temperature-Dependent Spin-Lattice Relaxation of the Nitrogen-Vacancy Spin Triplet in Diamond
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2023-06-22 |
| Journal | Physical Review Letters |
| Authors | Matthew Carl Cambria, Ariel Norambuena, Hossein T. Dinani, GergÅ Thiering, Aedan Gardill |
| Institutions | Lawrence Livermore National Laboratory, HUN-REN Wigner Research Centre for Physics |
| Citations | 29 |
Abstract
Section titled āAbstractāSpin-lattice relaxation within the nitrogen-vacancy (NV) centerās electronic ground-state spin triplet limits its coherence times, and thereby impacts its performance in quantum applications. We report measurements of the relaxation rates on the NV centerās |m_{s}=0ā©ā|m_{s}=Ā±1ā© and |m_{s}=-1ā©ā|m_{s}=+1ā© transitions as a function of temperature from 9 to 474 K in high-purity samples. We show that the temperature dependencies of the rates are reproduced by an ab initio theory of Raman scattering due to second-order spin-phonon interactions, and we discuss the applicability of the theory to other spin systems. Using a novel analytical model based on these results, we suggest that the high-temperature behavior of NV spin-lattice relaxation is dominated by interactions with two groups of quasilocalized phonons centered at 68.2(17) and 167(12) meV.