Hybridization Wave as the "Hidden Order" in URu2Si2
Hybridization Wave as the "Hidden Order" in URu2Si2
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DOI：
10.1103/physrevlett.106.086401
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发表时间：
2011-02-23
影响因子：
8.6
通讯作者：
Balatsky, Alexander V.
中科院分区：
文献类型：
--
作者：
Dubi, Yonatan;Balatsky, Alexander V.
介绍了重费米子材料URu2Si2中“隐序”跃迁的现象学模型。该隐阶是在轻空穴带和重电子带之间的不相称的带动量杂化。这种调制的杂化发生在高温下的范诺杂化之后。我们重点研究了杂化波作为URu2Si2和其他可能具有类似能带结构的材料的序参量。该模型在质量上与中子散射和扫描隧道显微镜等许多实验结果一致。具体来说，我们在状态密度和不相称向量Q*处发现了类似于0.6 pi/a(0)的gap - like特征。最后，该模型使我们能够做出符合当前实验的各种预测。
A phenomenological model for the "hidden order'' transition in the heavy-Fermion material URu2Si2 is introduced. The hidden order is identified as an incommensurate, momentum-carrying hybridization between the light hole band and the heavy electron band. This modulated hybridization appears after a Fano hybridization at higher temperatures takes place. We focus on the hybridization wave as the order parameter in URu2Si2 and possibly other materials with similar band structures. The model is qualitatively consistent with numerous experimental results obtained from, e.g., neutron scattering and scanning tunneling microscopy. Specifically, we find a gaplike feature in the density of states and the appearance of features at an incommensurate vector Q* similar to 0.6 pi/a(0). Finally, the model allows us to make various predictions which are amenable to current experiments.