What is the difference between "spin pumping" and "spin injection" ?

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Shaojie Hu Popular answer

The following address may be helpful.

http://www.appi.keio.ac.jp/Itoh_group/spintech6/lectures/Lec6_Jansen.pdf

Shaojie Hu

The spin pumping is one method of spin injection,

There are several methods for spin injection, such as the electrically driven spin injection (by electric current), thermally driven spin current ( by heat current), spin pumping(by spin wave or magnon). But most experiment results of the spin injection don't consider the contribution of heat current which generated by FMR.

Shalu Pathak

Dear Hu,

Thank you very much for your explanation.

Could you please explain me the mechanism of spin injection, what one needs for it and how to detect it?

Thanks

Thanks Dear Hu

How this spin spin pumping depends on the orientation of magnetization or field?