Transmission Electron Spin Resonance in Copper

Abstract

Conduction electron spin resonance in copper has been observed at 4.2 K, by the selective transmission method at a frequency of 9200 MHz. The obtained g value, 2.033±0.003, agrees with those in the previous reports. The line shape as well as the dc resistivity gives ωτ≈0.1. From the analysis of the relation between the linewidth and the sample thickness, we have found that the probability ε of a spin flip at the surface is ≈0.09 in our samples.