The results show that: (i) the spin-polarization of electron can not be produced in the anti-parallel magnetic barriers structure at zero bias voltage;

结果表明：零偏压下，电子在反平行等强磁垒结构中输运不会产生自旋极化；

youdao

So by parallel we mean - they're either both spin up remember that's our spin quantum number, that fourth quantum number.

所以我们意味着,它们都是自旋向上,记住我们的自旋量子数，是第四个量子数。

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