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arXiv · 0805.4357

Dynamic nuclear polarization with simultaneous excitation of electronic and nuclear transitions

G. W. Morley·K. Porfyrakis·A. Ardavan·J. van Tol
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Abstract

Dynamic nuclear polarization transfers spin polarization from electrons to nuclei. We have achieved this by a new method, simultaneously exciting transitions of electronic and nuclear spins. The efficiency of this technique improves with increasing magnetic field. Experimental results are shown for N@C60 with continuous-wave microwaves, which can be expected to produce even higher polarization than the corresponding pulsed techniques for electron spins greater than 1/2. The degree of nuclear polarization in this case can be easily monitored through the intensities of the well resolved hyperfine components in the EPR spectrum. The nuclear spin-lattice relaxation time is orders of magnitude longer than that of the electrons.

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G. W. Morley, K. Porfyrakis, A. Ardavan, J. van Tol. 2008-05-28. Dynamic nuclear polarization with simultaneous excitation of electronic and nuclear transitions. https://doi.org/10.1007/s00723-008-0112-x

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