Charge carrier dynamics of the heavy-fermion metal CeCoIn5 probed by THz spectroscopy

Charge carrier dynamics of the heavy-fermion metal CeCoIn5 probed by THz spectroscopy
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太赫兹光谱探测重费米金属 CeCoIn5 的载流子动力学

DOI:
10.1016/j.jmmm.2015.08.117
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发表时间:
2016
影响因子:
2.7
通讯作者:
Marc Scheffler
Marc Scheffler
中科院分区:
材料科学3区
文献类型:
--
作者:
Uwe S. Pracht;Julian Simmendinger;Martin Dressel;Ryota Endo;Tatsuya Watashige;Yousuke Hanaoka;Masaaki Shimozawa;Takahito Terashima;Takasada Shibauchi;Yuji Matsuda;Marc Scheffler

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我们讨论的重费米子化合物CeCoIn5的电荷载流子动力学的金属制度测量的准光学太赫兹光谱。在单粒子Drude框架下分析了电磁辐射通过介质衬底上CeCoIn 5薄膜的透射率。我们讨论的电子性质,如散射时间和直流电导率的温度依赖性,并与运输测量的方块电阻进行比较。朝向低温,我们发现从运输和德鲁德分析的光学测量和简单的单粒子图片描述的电荷动力学,可能是由相关电子系统的重费米子性质的演变造成的越来越无能的结果之间的不匹配。
We discuss the charge carrier dynamics of the heavy-fermion compound CeCoIn5in the metallic regime measured by means of quasi-optical THz spectroscopy. The transmittance of electromagnetic radiation through a CeCoIn5thin film on a dielectric substrate is analyzed in the single-particle Drude framework. We discuss the temperature dependence of the electronic properties, such as the scattering time and dc-conductivity and compare with transport measurements of the sheet resistance. Towards low temperatures, we find an increasing mismatch between the results from transport and Drude-analyzed optical measurements and a growing incapability of the simple single-particle picture describing the charge dynamics, likely caused by the evolving heavy-fermion nature of the correlated electron system.
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