CARBON-1S NEAR-EDGE-ABSORPTION FINE-STRUCTURE IN GRAPHITE
CARBON-1S NEAR-EDGE-ABSORPTION FINE-STRUCTURE IN GRAPHITE
复制标题
DOI：
10.1103/physrevb.48.2608
复制
发表时间：
1993-07-15
影响因子：
3.7
通讯作者：
BATSON, PE
中科院分区：
文献类型：
--
作者：
BATSON, PE
用高分辨率p(z)-和p(x,y)-投影的精细结构与对称投影的计算方法进行了比较。在p（x,y）结果中，费米能量以上约7.6 eV发生了一个非常急剧的跃迁，与非色散sigma*带非常吻合。费米能级以上8.5 eV附近的一个附加特征可能是由于类自由电子层间态的GAMMA2分支。在适度的激子畸变下，p(z)结果与预期的pi*带非常吻合。
High-resolution p(z)- and p(x,y)-projected fine structure for the 1s carbon core level in graphite are compared with symmetry-projected calculations. A very sharp transition occurs about 7.6 eV above the Fermi energy in the p(x,y) results, agreeing closely with the nondispersive sigma* band. An additional feature near 8.5 eV above the Fermi energy may be due to the GAMMA2- branch of the free-electron-like interlayer states. With a modest excitonic distortion, the p(z) results agree closely with the expected pi* band.