| Title | $^8$Li$^+$ $\beta$-NMR in the Cubic Insulator MgO |
| Publication Type | Journal Article |
| Year of Publication | 2014 |
| Authors | MacFarlane, WA, Parolin, TJ, Cortie, DL, Chow, KH, Hossain, MD, Kiefl, RF, Levy, CDP, McFadden, RML, Morris, GD, Pearson, MR, Saadaoui, H, Salman, Z, Song, Q, Wang, D |
| Journal | J. Phys.: Conf. Ser. |
| Volume | 551 |
| Pagination | 012033 |
| Abstract | We present extensive high magnetic field β -NMR measurements of 8 Li + implanted in single crystals of MgO. The narrow resonance, consistent with a cubic 8 Li + site, likely the tetrahedral interstitital, is used routinely as a reference for shift measurements. We show the intrinsic linewidth is on the order of 200 Hz, allowing a frequency determination to an accuracy of a few Hz. We find no implantation energy dependence of the resonance within a few ppm, but there is evidence of slow spin dynamics in hole-burning measurements. The spin lattice relaxation is slow. The temperature dependence reveals interesting changes at low temperature whose origin remains uncertain. |
| URL | http://stacks.iop.org/1742-6596/551/i=1/a=012033 |
