We present a scheme of surface-sensitive nuclear magnetic resonance in optically pumped semiconductors, where an NMR signal from a part of the surface of a bulk compound semiconductor is detected apart from the bulk signal. It utilizes optically oriented nuclei with a long spin-lattice relaxation time as a polarization reservoir for the second (target) nuclei to be detected. It provides a basis for the nuclear spin polarizer [IEEE Trans. Appl. Supercond. 14, 1635 (2004)], which is a polarization reservoir at a surface of the optically pumped semiconductor that polarizes nuclear spins in a target material in contact through the nanostructured interfaces.
@article{arxiv.0806.1992,
title = {Surface-sensitive NMR in optically pumped semiconductors},
author = {Atsushi Goto and Tadashi Shimizu and Kenjiro Hashi and Shinobu Ohki},
journal= {arXiv preprint arXiv:0806.1992},
year = {2008}
}