Charge dynamics and optical properties of layered cobaltates
نویسندگان
چکیده
We study the charge dynamics and electronic structure by optical spectroscopy technique. Here we focus on the following four issues: (1) the evolution of optical spectra with Na content; (2) the spectral features specific to different regions in the phase diagram; (3) the c-axis optical response for crystal at the A-type antiferromagnetic region; (4) the optical response of misfit-layered Bi2M2Co2Oy (M 1⁄4 Ba, Sr, Ca) and Ca3Co4Oy single crystals. & 2008 Elsevier Ltd. All rights reserved.
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