Abstract
We have studied the effect of electron-electron and electron-impurity collisions on the frequency-dependent behavior of the nuclear spin relaxation rate in a one-dimensional conductor using the Hubbard model. The effect of occasional tunneling of an electron to adjacent chains is also examined. It is found that electron-electron collisions can seriously affect the electron spin diffusion in the nuclear spin relaxation even in systems where they have little effect on dc conduction. The limiting behavior of the present results is compared with the high-temperature and strong-coupling results obtained by previous authors.
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