@article{oai:kyutech.repo.nii.ac.jp:00000401, author = {Arai, Masao and Kohiki, Shigemi and 古曵, 重美 and Yoshikawa, Hideki and Fukushima, Sei and Waseda, Yoshio and Oku, Masaoki}, issue = {8}, journal = {Physical review. Third series. B, Condensed matter and materials physics}, month = {Feb}, note = {We compare experimental O 1s electron energy-loss structures below 30 eV of single crystalline SrTiO3 ,BaTiO3, and TiO2 with their theoretical electron energy-loss functions. The photoelectron energy-loss structuresof in situ fractured surface in ultrahigh vacuum can be approximated by a sum of four components forSrTiO3 and BaTiO3, and of three components for TiO2. Electronic structures were calculated from first principlesusing the full-potential linearized augmented plane-wave method in the local-density approximation. Themomentum matrix elements between Bloch functions were evaluated to determine the electron energy-lossfunctions. The theoretical electron energy-loss functions agree well with experimental spectra except a structureat around 20 eV of SrTiO3 and that at around 18 eV of BaTiO3. The difference of high binding energypeaks is explained from the positions of semicore states.}, pages = {085101-1--085101-6}, title = {Photoelectron energy-loss functions of SrTiO3, BaTiO3, and TiO2: Theory and experiment}, volume = {65}, year = {2002}, yomi = {コヒキ, シゲミ} }