Anomalous Hall effect in Sr2RuO4
Anomalous Hall effect in Sr2RuO4
复制标题
Sr2RuO4 中的反常霍尔效应
DOI：
10.1143/jpsj.68.1625
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发表时间：
1999
影响因子：
1.7
通讯作者：
K. Yamada
中科院分区：
文献类型：
--
作者：
M. Miyazawa;H. Kontani;K. Yamada
提出了sr2ruo4中反常霍尔效应的理论，该理论可以看作是低温下的二维费米液体系统。根据最近关于霍尔效应的实验结果，霍尔系数在低温下表现出强烈的温度依赖性。我们试图将霍尔系数R H的急剧增加解释为反常霍尔效应，并表明R H的温度依赖性可以用ρ 2表示，ρ为电阻率，与我们的理论预测一致。然而，为了证实这一结论，需要更多干净样本的数据。我们还进一步证明了轨道简并在反常霍尔效应中起着重要作用。
We present a theory of anomalous Hall effect in Sr 2 RuO 4 , which can be treated as a 2-dimensional Fermi liquid system at low temperatures. According to the recent experimental result on the Hall effect, the Hall coefficient shows strong temperature dependence at low temperatures. We try to explain the sharp increase of the Hall coefficient R H as the anomalous Hall effect, and show that the temterature dependence of R H can be plotted as ρ 2 , ρ being the electrical resistivity, in accordance with our theoretical prediction. However, to confirm this conclusion the data for more clean sample are highly expected. Further we show also that the orbital degeneracy plays an essential role in the anomalous Hall effect.