Abstract We have studied the band structure and optical properties of 4H-SiC by using a full potential linearized augmented plane waves (FPLAPW) method. The density of states (DOS) and band structure are presented. The imaginary part of the dielectric function has been obtained directly from the band structure calculation. With band gap correction, the real part of the dielectric function has been derived from the imaginary part by the Kramers－Kronig (KK) dispersion relationship. The values of reflectivity for normal incidence as a function of photon energy have also been calculated. We found the theoretical results are in good agreement with the experimental data.
Received: 25 February 2004
Revised: 21 June 2004
Accepted manuscript online:
PACS:
71.15.Ap
(Basis sets (LCAO, plane-wave, APW, etc.) and related methodology (scattering methods, ASA, linearized methods, etc.))
Fund: Project supported by the National Natural Science Foundation of China (Grant No 50132040) and the Knowledge Innovation Programme of Chinese Academy of Sciences.
Cite this article:
Xu Peng-Shou (徐彭寿), Xie Chang-Kun (谢长坤), Pan Hai-Bin (潘海斌), Xu Fa-Qiang (徐法强) Theoretical study on the band structure and optical properties of 4H-SiC 2004 Chinese Physics 13 2126
Surface-induced orbital-selective band reconstruction in kagome superconductor CsV3Sb5 Linwei Huai(淮琳崴), Yang Luo(罗洋), Samuel M. L. Teicher, Brenden R. Ortiz, Kaize Wang(王铠泽),Shuting Peng(彭舒婷), Zhiyuan Wei(魏志远), Jianchang Shen(沈建昌), Bingqian Wang(王冰倩), Yu Miao(缪宇),Xiupeng Sun(孙秀鹏), Zhipeng Ou(欧志鹏), Stephen D. Wilson, and Junfeng He(何俊峰). Chin. Phys. B, 2022, 31(5): 057403.
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