Related papers: Non-magnetic spin generation in $n$-doped GaAs qua…

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This paper has been withdrawn by the author(s) due to the discussion was made on the basis of linear term merely, which is incomplete.

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This paper has been withdrawn by the authors, since the reference citation were not appropriately arranged.

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This paper has been withdrawn by the author due to the incorrect argument for the security.

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This paper has been withdrawn. The sample was a mixed phase.

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