Journal
PHYSICAL REVIEW LETTERS
Volume 114, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.247603
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Funding
- Air Force Office of Scientific Research (AFOSR)
- AFOSR Multidisciplinary Research Program of the University Research Initiative
- National Science Foundation
- Material Research Science and Engineering Center
- Knut AMP
- Alice Wallenberg Foundation Isotopic Control for Ultimate Materials Properties
- Lendulet program of the Hungarian Academy of Sciences
- National Supercomputer Center in Sweden
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1306300] Funding Source: National Science Foundation
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We demonstrate optically pumped dynamic nuclear polarization of Si-29 nuclear spins that are strongly coupled to paramagnetic color centers in 4H- and 6H-SiC. The 99% +/- 1% degree of polarization that we observe at room temperature corresponds to an effective nuclear temperature of 5 mu K. By combining ab initio theory with the experimental identification of the color centers' optically excited states, we quantitatively model how the polarization derives from hyperfine-mediated level anticrossings. These results lay a foundation for SiC-based quantum memories, nuclear gyroscopes, and hyperpolarized probes for magnetic resonance imaging.
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