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

Carmem Maia Gilardoni; Tom Bosma; Danny van Hien; Freddie Hendriks; Björn Magnusson; Alexandre Ellison; Ivan G. Ivanov; N. T. Son; Caspar H. van der Wal

doi:10.1088/1367-2630/abbf23

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

Carmem Maia Gilardoni^*, Tom Bosma, Danny van Hien, Freddie Hendriks, Björn Magnusson, Alexandre Ellison, Ivan G. Ivanov, N. T. Son, Caspar H. van der Wal

^*Corresponding author for this work

Physics of Nanodevices

Research output: Contribution to journal › Article › Academic › peer-review

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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.

Original language	English
Article number	103051
Journal	New Journal of Physics
Volume	22
Issue number	10
DOIs	https://doi.org/10.1088/1367-2630/abbf23
Publication status	Published - Oct-2020

Keywords

quant-ph
cond-mat.mes-hall
physics.optics
MAGNETIC-RESONANCE
VANADIUM

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Spin-relaxation times exceeding seconds for color centers with strong spin–orbit coupling in SiCFinal publisher's version, 1.94 MBLicence: CC BY

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

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. ",

keywords = "quant-ph, cond-mat.mes-hall, physics.optics, MAGNETIC-RESONANCE, VANADIUM",

author = "{Maia Gilardoni}, Carmem and Tom Bosma and Hien, {Danny van} and Freddie Hendriks and Bj{\"o}rn Magnusson and Alexandre Ellison and Ivanov, {Ivan G.} and Son, {N. T.} and Wal, {Caspar H. van der}",

year = "2020",

month = oct,

doi = "10.1088/1367-2630/abbf23",

language = "English",

volume = "22",

journal = "New Journal of Physics",

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TY - JOUR

T1 - Spin-relaxation times exceeding seconds for color centers with strong spin-orbit coupling in SiC

AU - Maia Gilardoni, Carmem

AU - Bosma, Tom

AU - Hien, Danny van

AU - Hendriks, Freddie

AU - Magnusson, Björn

AU - Ellison, Alexandre

AU - Ivanov, Ivan G.

AU - Son, N. T.

AU - Wal, Caspar H. van der

PY - 2020/10

Y1 - 2020/10

N2 - 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.

AB - 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.

KW - quant-ph

KW - cond-mat.mes-hall

KW - physics.optics

KW - MAGNETIC-RESONANCE

KW - VANADIUM

U2 - 10.1088/1367-2630/abbf23

DO - 10.1088/1367-2630/abbf23

M3 - Article

SN - 1367-2630

VL - 22

JO - New Journal of Physics

JF - New Journal of Physics

IS - 10

M1 - 103051

ER -

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

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