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Spin-relaxation times exceeding seconds for color centers with strong spin-orbit coupling in SiC
- Source :
- New Journal of Physics, 22 (2020)
- Publication Year :
- 2019
-
Abstract
- Spin-active color centers in solids show good performance for quantum technologies. Several transition-metal defects in SiC offer compatibility with telecom and semiconductor industries. However, whether their strong spin-orbit coupling degrades their spin lifetimes is not clear. We show that a combination of a crystal-field with axial symmetry and spin-orbit coupling leads to a suppression of spin-lattice and spin-spin interactions, resulting in remarkably slow spin relaxation. Our optical measurements on an ensemble of Mo impurities in SiC show a spin lifetime $T_1$ of $2,4$ s at $2$ K.
Details
- Database :
- arXiv
- Journal :
- New Journal of Physics, 22 (2020)
- Publication Type :
- Report
- Accession number :
- edsarx.1912.04612
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1088/1367-2630/abbf23