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arXiv 1707.02462cond-mat.str-el
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Sr2RuO4中的自旋轨道耦合和电子关联

Spin-Orbit Coupling and Electronic Correlations in Sr2RuO4

Minjae Kim, Jernej Mravlje, Michel Ferrero, Olivier Parcollet, Antoine Georges

摘要:

利用动力学平均场论研究了Sr2RuO4中自旋轨道耦合(SOC)和电子关联的相互作用.我们发现,SOC不影响相关诱导的重正化,这验证了Hund的金属图片的rectenates,即使在存在的相当大的SOC相关的这些材料。尽管如此,SOC发现显着改变的电子结构在k点,其中简并适用于在其缺席。我们解释了为什么这两个观察是相互一致的,并计算SOC的相关电子结构的影响。这些影响的大小被发现取决于所考虑的准粒子状态的能量,导致我们引入“能量依赖的准粒子自旋轨道耦合”的概念。这一概念一般适用于所有自旋轨道耦合和电子关联都相当大的材料。

英文摘要:

We investigate the interplay of spin-orbit coupling (SOC) and electronic correlations in Sr2RuO4 using dynamical mean-field theory. We find that SOC does not affect the correlation-induced renormalizations, which validates the Hund's metal picture of ruthenates even in the presence of the sizable SOC relevant to these materials. Nonetheless, SOC found to change significantly the electronic structure at k-points where a degeneracy applies in its absence. We explain why these two observations are consistent with one another and calculate effects of SOC on the correlated electronic structure. The magnitude of these effects is found to depend on the energy of the quasiparticle state under consideration, leading us to introduce the notion of an "energy-dependent quasiparticle spin-orbit coupling". This notion is generally applicable to all materials in which both the spin-orbit coupling and electronic correlations are sizable.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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