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cond-mat.str-el2006★ 93 cited
Role of electron-electron and electron-phonon interaction effect in the optical conductivity of VO2
K. Okazaki, S. Sugai, Y. Muraoka +1
We have investigated the charge dynamics of VO2 by optical reflectivity measurements. Optical conductivity clearly shows a metal-insulator transition. In the metallic phase, a broa…
cond-mat.str-el2003
Photoemission study of the metal-insulator transition in VO_2/TiO_2(001) : Evidence for strong electron-electron and electron-phonon interaction
K. Okazaki, H. Wadati, A. Fujimori +3
We have made a detailed temperature-dependent photoemission study of VO_2/TiO_2(001) thin films, which show a metal-insulator transition at \sim 300 K. Clean surfaces were obtained…
cond-mat.str-el2003
In situ photoemission study of the room-temperature ferromagnet ZnGeP_2:Mn
Y. Ishida, D. D. Sarma, K. Okazaki +7
The chemical states of the ZnGeP:Mn interface, which shows ferromagnetism above room-temperature, has been studied by photoemission spectroscopy. Mn deposition on the ZnGeP$_…