Supported by the National Natural Science Foundation of China under Grant Nos,10874087,11074124 and 11174113;Jiangsu Provincial Natural Science Foundation under Grant No.200921555.
The optical properties and electronic structure of marokite-type CaMn2O4 are investigated by using UV−vis spectroscopy and the local-spin-density approximation plus the Hubbard-U(LSDA+U)method.Four absorption bands ar...
We study the electronic structures of LiMn2O4 by x-ray and ultraviolet photoelectron spectroscopy (XPS, UPS) and resonant photoelectron spectroscopy (RPES). XPS data suggest that the average oxidation state of Mn ...