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Journal Article

Low-energy optical conductivity of Yb4As3


Aoki,  H.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Kimura, S., Okuno, M., Iwata, H., Nishi, T., Aoki, H., & Ochiai, A. (2002). Low-energy optical conductivity of Yb4As3. Physica B, 312, 356-358. doi:10.1016/S0921-4526(01)01075-4.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0015-318D-C
To investigate the anomalous transport property and the electronic structure near the Fermi level of Yb4As3, we have measured the temperature dependence of reflectivity spectra of Yb-4(As1-xPx)(3) (x = 0, 0.05, 0.15) in the far-infrared region. In Yb4As3, a Drude-curve with very low carrier density and long relaxation time appears at temperatures below 70 K. Coincidently, a peak appears around 15 meV. The peak is considered to originate from the hybridization between Yb3+ 4f- hole and 5d states on the Yb3+ chain. (C) 2002 Elsevier Science B.V. All rights reserved.