Determination of the first Landau spin parameter (B0) in lithium via transmission spin resonance

Abstract

Analyses of transmission-electron-spin-resonance data are presented which yield quantitative information regarding the first Landau spin parameter $B_0$ in sodium and lithium in the regime where resolved spin waves are not observable. At low temperatures $B_0$ is obtained from an analysis of line-shape asymmetries. At higher temperatures $B_0$ is deduced by a comparison of spin and momentum diffusion constants. The value of $B_0$ for sodium is consistent with that obtained from spin waves and provides verification of the new methods described. $B_0$ obtained for lithium is used to calculate the electronic susceptibility which is compared with other experimental and theoretical results.