Models for the Analysis of IR Reflectivity in TlBiTe2 with Different Size of Twins
E. Hatzikraniotis
Department of Physics, Aristotle University of Thessaloniki, 54123 Thessaloniki, Greece
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In this work TlBiTe2 were grown by a modified Bridgman technique and examined samples had different lateral dimensions of twins, ranging from 0.1 μm to 1 μm. The average lateral size of the twins seems to affect free carrier concentration and plasma frequency. Infrared spectra were analyzed by two models, the extended Drude model and a generalized empirical model of frequency-dependent damping factor. Increase in size of twins affects the electronic properties and hence plasma reflectivity and free carrier concentration of TlBiTe2.
DOI: 10.12693/APhysPolA.121.284
PACS numbers: 78.20.Bh, 78.30.-j