Vol. 32 No. 1 (2022)

Excitation Spectra of Cubic Perovskite Titanates

Le Hong Phuc
\(^{1}\)Ho Chi Minh City Institute of Physics, Vietnam Academy of Science and Technology, 01 Mac Dinh Chi St, Dist 01 Ho Chi Minh City, Vietnam;
\(^{2}\)Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
Nguyen Quang Hien
Ho Chi Minh City Institute of Physics, Vietnam Academy of Science and Technology, 01 Mac Dinh Chi St, Dist 01 Ho Chi Minh City, Vietnam
Hieu T. Nguyen-Truong
Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam
Hung M. Le
Department of Chemistry, Washington State University, Pullman, Washington 99164, United States

Published 15-01-2022

How to Cite

Phuc, L. H., Hien, N. Q., Nguyen-Truong, H. T., & Le, H. M. (2022). Excitation Spectra of Cubic Perovskite Titanates. Communications in Physics, 32(1), 49. https://doi.org/10.15625/0868-3166/16343


We calculate excitation spectra of cubic perovskites ATiO3 (A = Ca, Sr, Ba, Pb). The calculations are performed within the time-dependent density functional theory, including local field effects. The theoretical calculations show that the perovskites have a plasmon mode at around 12 eV, which is not observed in experiments.


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