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Electronic Structure and Charge Dynamics of Huesler Alloy Fe2TiSn Probed by Infrared and Optical Spectroscopy

S. V. Dordevic·D. N. Basov·A. Slebarski·M. B. Maple·L. Degiorgi
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Abstract

We report on the electrodynamics of a Heusler alloy Fe2TiSn probed over four decades in energy: from the far infrared to the ultraviolet. Our results do not support the suggestion of Kondo-lattice behavior inferred from specific heat measurements. Instead, we find a conventional Drude-like response of free carriers, with two additional absorption bands centered at around 0.1 and 0.87 eV. The latter feature can be interpreted as excitations across a pseudogap, in accord with band structure calculations.

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S. V. Dordevic, D. N. Basov, A. Slebarski, M. B. Maple, L. Degiorgi. 2002-02-27. Electronic Structure and Charge Dynamics of Huesler Alloy Fe2TiSn Probed by Infrared and Optical Spectroscopy. https://doi.org/10.1103/physrevb.66.075122

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