Phys. Rev. Lett. 20, 491–493 (1968)Nuclear Dynamic Polarization by Optical Electronic Saturation and Optical Pumping in SemiconductorsReceived 12 December 1967; published in the issue dated 4 March 1968 A nonresonant Overhauser effect by photoexcited conduction electrons is obtained on Si29 nuclei in silicon at 77°K in two different ways: (a) Saturation of the electronic magnetization is achieved with unpolarized light by exciting an equal number of spins up and spins down. (b) Polarized electronic spins are produced by optical pumping with circularly polarized light; the nuclear magnetization obtained in 1 G by optically pumped electrons corresponds to the equilibrium value at 77°K in 28 kG. © 1968 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.20.491
DOI:
10.1103/PhysRevLett.20.491
PACS:
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