热核Laplacian的谱隙以及紧致分解(英文)_stmopen 关键词】: 谱隙 热核 双曲空间 紧致分解 [gap=284]Keywords】: spectral gap,heat kernel,hyperbolic space,compact resolvent
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在带隙附近存在四个表面态带，其中的两个占有表面态带已由价带的同步辐射光电子能谱实验得到证实。
There are four surface state bands in the gap. Among them, two occupied surface state bands have been confirmed by valence band spectra of synchrotron radiation photoelectron spectroscopy.
结果表明，-U中心的存在使激发谱“能隙”内出现很小值的态密度。
Results show that a small density of states due to the -U centers exists in the region of "energy gap".
传输谱和弯曲特性测试表明布拉格光纤样品具有两个明显的传输波段，体现了带隙导光的特征。
The measurements of the fiber sample demonstrate its bandgap-guided properties, showing two obvious bandgap guided transmission bands.
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