# Inductive measurement of optically hyperpolarized phosphorous donor nuclei in an isotopically enriched silicon-28 crystal.

@article{Gumann2014InductiveMO, title={Inductive measurement of optically hyperpolarized phosphorous donor nuclei in an isotopically enriched silicon-28 crystal.}, author={Patryk Gumann and Om Patange and Chandrasekhar Ramanathan and Holger Haas and Osama Moussa and Mike L. W. Thewalt and Helge Riemann and N. V. Abrosimov and Peter Becker and Hans-Joachim Pohl and Kohei M. Itoh and David G. Cory}, journal={Physical review letters}, year={2014}, volume={113 26}, pages={ 267604 } }

We experimentally demonstrate the first inductive readout of optically hyperpolarized phosphorus-31 donor nuclear spins in an isotopically enriched silicon-28 crystal. The concentration of phosphorus donors in the crystal was 1.5×10(15) cm(-3), 3 orders of magnitude lower than has previously been detected via direct inductive detection. The signal-to-noise ratio measured in a single free induction decay from a 1 cm(3) sample (≈10(15) spins) was 113. By transferring the sample to an X-band ESR…

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We are in the processes of extending the 31 P T2 by moving the polarized system to higher temperature where the T1 of the electron becomes much less important to the defect T2