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Spin-relaxation times exceeding seconds for color centers with strong spin-orbit coupling in SiC
Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands.
Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands.
Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands.
Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands.
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2020 (English)In: New Journal of Physics, E-ISSN 1367-2630, Vol. 22, no 10, article id 103051Article in journal (Refereed) Published
Abstract [en]

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.
Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2020. Vol. 22, no 10, article id 103051
Keywords [en]
semiconductor defects; quantum information; defect symmetries; spin– lattice interaction
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-171490DOI: 10.1088/1367-2630/abbf23ISI: 000583987900001OAI: oai:DiVA.org:liu-171490DiVA, id: diva2:1502323
Note

Funding Agencies|Zernike Institute BIS program; EU H2020 project QuanTELCO [862721]; Swedish Research CouncilSwedish Research Council [VR 2016-04068, VR 2016-05362]; Knut and AliceWallenberg FoundationKnut & Alice Wallenberg Foundation [KAW 2018.0071]; Carl Tryggers Stiftelse for Vetenskaplig Forskning [CTS 15:339]

Available from: 2020-11-19 Created: 2020-11-19 Last updated: 2024-01-17Bibliographically approved

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Ivanov, Ivan GueorguievNguyen, Son Tien

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