|Title||$\beta$-detected \NMR\ of 8Li in the normal state of 2H-NbSe$_2$|
|Publication Type||Journal Article|
|Year of Publication||2006|
|Authors||Wang, D, Hossain, MD, Salman, Z, Arseneau, D, Chow, KH, Daviel, S, Keeler, TA, Kiefl, RF, Kreitzman, SR, Levy, CDP, Morris, GD, Miller, RI, MacFarlane, WA, Parolin, TJ, Saadaoui, H|
|Pagination||239 - 242|
β -NMR of isolated 8Li has been investigated in the normal state of 2H- NbSe 2 . In a high magnetic field of 3 T a single resonance is observed with a Gaussian line width of 3.5 kHz. The line shape varies weakly as function of magnetic field and temperature but has a strong orientation dependence. The nuclear electric quadrupole splitting is unresolved implying that the electric field gradients are 10–100 times smaller than in other non-cubic crystals. The nuclear spin relaxation rate is also anomalously small but varies linearly with temperature as expected for Korringa relaxation in a metal. These results suggest that Li adopts an interstitial position between the weakly coupled NbSe 2 layers and away from the conduction band.