First principles calculation of anomalous Hall conductivity in ferromagnetic bcc Fe

First principles calculation of anomalous Hall conductivity in ferromagnetic bcc Fe
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DOI:
10.1103/physrevlett.92.037204
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发表时间:
2004-01-23
影响因子:
8.6
通讯作者:
Niu, Q
Niu, Q
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Yao, YG;Kleinman, L;Niu, Q

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我们对铁磁bcc铁中的反常霍尔效应进行了第一性原理计算。我们的理论确定了异常霍尔电导率的内在贡献,并将其与占据布洛赫态的k空间贝里相联系起来。这种直流电导电性与众所周知的磁光效应有着相同的起源,我们的结果解释了在没有可调参数的铁晶体上的实验测量。
We perform a first principles calculation of the anomalous Hall effect in ferromagnetic bcc Fe. Our theory identifies an intrinsic contribution to the anomalous Hall conductivity and relates it to the k-space Berry phase of occupied Bloch states. This dc conductivity has the same origin as the well-known magneto-optical effect, and our result accounts for experimental measurement on Fe crystals with no adjustable parameters.