Electronic excitation structure, correlation, and relaxation and their effects on the optical properties and electron emission of transition metal oxides

Issued as Financial status reports [1-2], Annual reports [1-2], and Final report, Project no. G-41-650Final report has title: Electronic excitation structure, correlation, and relaxation and their effects on the optical properties and electron emission of transition metal oxide

Correlation and collective modes in narrow band materials : N, O, and FeO

Issued as Interim report, Project no. G-41-615 (continuation of G-41-688; continued by G-41-626

Correlation and collective modes in narrow band systems

Issued as Interim report, Project no. G-41-626 (continuation of G-41-615; continued by G-41-606

Theoretical studies of the microscopic mechanisms of friction and wear

Issued as Final report, Project no. G-41-61

Correlation and collective modes in narrow band materials NiO and FeO

Issued as Research proposal, Interim financial status report, and Interim report, Project no. G-41-68

Correlation and collective modes in narrow band materials

Issued as Interim report, and Final report, Project no. G-41-61

Oxygen, sulfur, and carbon chemisorbed on iron using angle resolved photoemission

Issued as Annual report, and Final report, Project no. G-41-67

Space-Time Kernel Density Estimation for Real-Time Interactive Visual Analytics

We present a GPU-based implementation of the Space-Time Kernel Density Estimation (STKDE) that provides massive speed up in analyzing spatial- temporal data. In our work we are able to achieve sub- second performance for data sizes transferable over the Internet in realistic time. We have integrated this into web-based visual interactive analytics tools for analyzing spatial-temporal data. The resulting inte- grated visual analytics (VA) system permits new anal- yses of spatial-temporal data from a variety of sources. Novel, interlinked interface elements permit efficient, meaningful analyses

Role of electron-electron and electron-phonon interaction effect in the optical conductivity of VO2

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 broad Drude-like structure is observed. On the other hand, in the insulating phase, a broad peak structure around 1.3 eV is observed. It is found that this broad structure observed in the insulating phase shows a temperature dependence. We attribute this to the electron-phonon interaction as in the photoemission spectra.Comment: 6 pages, 8 figures, accepted for publication in Phys. Rev.