Spin-relaxation times exceeding seconds for color centers with strong spin-orbit coupling in SiC
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 comb...
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| creator | Gilardoni, Carmem M Bosma, Tom Danny van Hien Hendriks, Freddie Magnusson, Björn Ellison, Alexandre Ivanov, Ivan G Son, N T Caspar H van der Wal |
| description | 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. |
| doi_str_mv | 10.48550/arxiv.1912.04612 |
| format | Article |
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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.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.1912.04612</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Color centers ; Crystal defects ; Optical measurement ; Physics - Mesoscale and Nanoscale Physics ; Physics - Optics ; Physics - Quantum Physics ; Spin-orbit interactions ; Transition metals</subject><ispartof>arXiv.org, 2019-12</ispartof><rights>2019. 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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.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.1912.04612</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Color centers Crystal defects Optical measurement Physics - Mesoscale and Nanoscale Physics Physics - Optics Physics - Quantum Physics Spin-orbit interactions Transition metals |
| title | Spin-relaxation times exceeding seconds for color centers with strong spin-orbit coupling in SiC |
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