Y
Yutaka Toyozawa
Researcher at University of Tokyo
Publications - 75
Citations - 6354
Yutaka Toyozawa is an academic researcher from University of Tokyo. The author has contributed to research in topics: Exciton & Excited state. The author has an hindex of 38, co-authored 75 publications receiving 6175 citations.
Papers
More filters
Journal ArticleDOI
Application of the Method of Generating Function to Radiative and Non-Radiative Transitions of a Trapped Electron in a Crystal
Ryogo Kubo,Yutaka Toyozawa +1 more
TL;DR: In this paper, the shape of the absorption band and the probability for non-radiative transition of a trapped electron in insulating or semiconducting crystal, especially their temperature dependence, were discussed using the method of generating function.
Journal ArticleDOI
Dynamical Jahn-Teller Effect in Alkali Halide Phosphors Containing Heavy Metal Ions
Yutaka Toyozawa,Masaharu Inoue +1 more
TL;DR: In this paper, the frequency of lattice vibrations around the imperfection which give rise to the level splitting of degenerate excited states are classified into active and potentially active modes according as they cause the absorption band to split or not.
Journal ArticleDOI
Self-Trapping of an Electron by the Acoustical Mode of Lattice Vibration. I
TL;DR: In this paper, the importance of the acoustical mode of lattice vibration for self-trapping of an electron is shown, and it is shown that when the coupling constant between the electron and the acoustic mode vibration exceeds a certain critical value, the effective mass of the electron changes discontinuously to such an enormous value that the electron is practically allowed to take a localized self- trapping state as an eigenstate.
Journal ArticleDOI
Urbach-Martienseen Rule and Exciton Trapped Momentarily by Lattice Vibrations
Hitoshi Sumi,Yutaka Toyozawa +1 more
TL;DR: In this paper, a theory for the U-M rule on the low energy tail of the fundamental absorption edge of insulators is proposed, where the exciton propagator is solved for an adiabatic lattice and the self-energy of exciton is obtained.