Orbital-selective mass enhancements in multiband Ca(2-x)Sr(x)RuO4 systems analyzed by the extended Drude model.
Orbital-selective mass enhancements in multiband Ca(2-x)Sr(x)RuO4 systems analyzed by the extended Drude model.
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DOI：
10.1103/physrevlett.96.057401
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发表时间：
2005-04
影响因子：
8.6
通讯作者：
J. S. Lee;S. Moon;T. Noh;S. Nakatsuji;Y. Maeno
中科院分区：
文献类型：
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作者：
J. S. Lee;S. Moon;T. Noh;S. Nakatsuji;Y. Maeno
我们研究了准二维多带系统的光谱。扩展的Drude模型对平面光电导率谱的分析表明，有效质量应在附近增强。基于求和规则的论点，我们表明，轨道选择性的莫特带隙开放的带，广泛研究的图片，不能起源的质量增强。我们在扩展的Drude模型分析中利用了多带效应，并证明了附近有趣的重质量态应该来自带的重正化。
We investigated optical spectra of quasi-two-dimensional multiband systems. The extended Drude model analysis on the -plane optical conductivity spectra indicates that the effective mass should be enhanced near . Based on the sum rule argument, we showed that the orbital-selective Mott-gap opening for the bands, the widely investigated picture, could not be the origin of the mass enhancement. We exploited the multiband effects in the extended Drude model analysis, and demonstrated that the intriguing heavy mass state near should come from the renormalization of the band.