Charge Carrier Dynamics of the Heavy Fermion Metal CeCoIn$_5$ Probed by THz Spectroscopy
| Autor: | Ryota Endo, Marc Scheffler, Julian Simmendinger, Takahito Terashima, Uwe S. Pracht, Yousuke Hanaoka, Takasada Shibauchi, M. Shimozawa, Tatsuya Watashige, Yuji Matsuda, Martin Dressel |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Condensed matter physics Strongly Correlated Electrons (cond-mat.str-el) Scattering FOS: Physical sciences Charge (physics) 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Drude model Electromagnetic radiation Electronic Optical and Magnetic Materials Condensed Matter - Strongly Correlated Electrons 0103 physical sciences Transmittance Charge carrier Thin film 010306 general physics 0210 nano-technology Sheet resistance |
| Popis: | We discuss the charge carrier dynamics of the heavy-fermion compound CeCoIn 5 in the metallic regime measured by means of quasi-optical THz spectroscopy. The transmittance of electromagnetic radiation through a CeCoIn 5 thin 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. |
| Databáze: | OpenAIRE |
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