Effect of zero-point energy on the dielectric behavior of strontium titanate |
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| Authors: | M Yuan CL Wang YX WangR Ali JL Zhang |
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| Institution: | a State Key Laboratory of Crystal Materials, School of Physics and Microelectronics, Shandong University, Hongjialou 5, Jinan 250100, People's Republic of China
b Department of Physics, PLA Jinan Army Academy, Jinan 250029, People's Republic of China |
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| Abstract: | Barrett formula has been obtained in the framework of the effective field approach by including the zero-point energy. By fitting with experimental data of dielectric constant of SrTiO3, we find that they agree in the whole temperature range fairly well if the zero-point energy is assumed to change from a small value at low temperature to a large value at high temperature. |
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| Keywords: | 77 22 Ch 68 35 Rh 77 80 Bh |
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