Shining Light on Transition-Metal Oxides: Unveiling the Hidden Fermi Liquid
Shining Light on Transition-Metal Oxides: Unveiling the Hidden Fermi Liquid
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DOI：
10.1103/physrevlett.113.246404
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发表时间：
2014-12-08
影响因子：
8.6
通讯作者：
Kotliar, Gabriel
中科院分区：
文献类型：
--
作者：
Deng, Xiaoyu;Sternbach, Aaron;Kotliar, Gabriel
我们使用低能量光谱和第一性原理局域密度近似加上动力学平均场理论计算来测试的假设，即强相关金属的异常输运性质起源于其潜在的弹性准粒子的强温度依赖性。我们用有效等离子体频率来表示电阻率。ω（p）* 和有效散射率1/τ（*）（tr）。结果表明，在原型关联材料V2 O3中，ω（p）* 随温度的升高而增大，而由部分和规则得到的等离子体频率则呈现相反的趋势。1/tau（*）（tr）具有比从扩展Drude分析获得的散射率更显著的温度依赖性。这些量的理论计算与实验定量一致。我们推测，这些都是强大的性能的所有强相关的金属，并进行类似的分析薄膜NdNiO 3上的LaAlO 3基板测试的猜想。
We use low energy optical spectroscopy and first principles local density approximation plus dynamical mean field theory calculations to test the hypothesis that the anomalous transport properties of strongly correlated metals originate in the strong temperature dependence of their underlying resilient quasiparticles. We express the resistivity in terms of an effective plasma frequency. omega(p)* and an effective scattering rate 1/tau(*)(tr). We show that in the archetypal correlated material V-2 O-3, omega(p)* increases with increasing temperature, while the plasma frequency from the partial sum rule exhibits the opposite trend. 1/tau(*)(tr) has a more pronounced temperature dependence than the scattering rate obtained from the extended Drude analysis. The theoretical calculations of these quantities are in quantitative agreement with experiment. We conjecture that these are robust properties of all strongly correlated metals, and test the conjecture by carrying out a similar analysis on thin film NdNiO3 on a LaAlO3 substrate.