Spin-relaxation times exceeding seconds for color centers with strong spin-orbit coupling in SiC

Maia Gilardoni, C., Bosma, T., Hien, D. V., Hendriks, F., Magnusson, B., Ellison, A., Ivanov, I. G., Son, N. T. & Wal, C. H. V. D., 10-Dec-2019, (Submitted) In : ArXiv.

Research output: Contribution to journalArticleAcademic

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.
Original languageEnglish
Publication statusSubmitted - 10-Dec-2019


  • quant-ph, cond-mat.mes-hall, physics.optics

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