2. We propose a method to construct omnidirectional reflectors withwide band gaps by one dimensional photonic crystals, and the main notion is the direct tailor of the projected band structures.
We presented the surface projected band structure along the high line of surface brillouin zone,the electron properties,such as localization and dispersion of this surface states are discussed.
我们给出了四种半导体材料的表面投影能带结构和与它们相对应的各个表面态 ,讨论了各个表面态沿表面布里渊区高对称线Г Y S X Г的色散关系 .
Using the scattering\|theoretic method and employing the second nearest\|neighbor tight\|binding formalism to describe the bulk electronic structure,we calculated the surface electronic structure of InSb(211) A,B surfaces. The surface projected band structures are presented.
The bulk electronic structure of YBa 2Cu 3O 7 was described by the third-neighbor tight-binding formalism and an analytic scattering theoretical method was used to evaluate the surface electronic structure. The bulk and surface density of states and the surface projected band structure of CuO and CuO 2 terminated surface are calculated. The surface density of states of CuO and CuO 2 are compared with the density of states of bulk.
用近似到第三近邻的紧束缚模型得到了 YBCO的体电子态密度 ,Cu O及 Cu O2 的表面态密度和表面投影能带 ,进而分析了 Cu O和 Cu O2 的表面态密度的特点及与体态密度的差别。
By the method of the formular scattering theory,the electronic structure of InSb(110) relaxed surface is calculated,and the density of surface state,the projected surface band structure of InSb(110) are presented.
It is possible to fabricate tubules with direct band gaps away from the Γ point by exploiting the similarities between the projected band structure of graphite and that of the tubule.
Modelling indicates that electrons excited in the Si substrate with energies and parallel momenta not allowed in Ag contribute to the surface chemistry after crossing the gap in the projected band structure of Ag(111).
The gray areas are the projected band structure of the perfect 2D photonic crystal.
例句来源
By the method of the formular scattering theory,the electronic structure of InSb(110) relaxed surface is calculated,and the density of surface state,the projected surface band structure of InSb(110) are presented. Analysising the results,the origination of InSb (110) relaxed surface is also discussed.
Using the sp 3s * energy band model and the method of the formular scattering theory, the electronic structure of InAs(110) relaxed surface has been calculated, the projected surface band structure and the layer density of surface state at M point of InAs(110) have been presented.The reason of the origination of the surface states,the characteristic of the orbital and the change of the surface states upon relaxation discussed.The results are inconcordance with those from experiments and other theo...
Using the scattering\|theoretic method and employing the second nearest\|neighbor tight\|binding formalism to describe the bulk electronic structure,we calculated the surface electronic structure of InSb(211) A,B surfaces.The surface projected band structures are presented.The results show that the (211) B surface is more stable than the (211) A surface.Our results are in agreement with the experiments.