Interband Absorption Spectra of Disordered Semiconductors in the Coherent Potential Approximation
スポンサーリンク
概要
- 論文の詳細を見る
The interband absorption spectra of a system with Gaussian site diagonaldisorder are calculated in the coherent potential approximation. The electron-hole vortex part due to interband stochastic correlation is taken into account.The relaxation of the A-selection rule and the effect of localization are studiedthrough the calculation of the optical transition matrix elements. It is clarifiedthat the band tail states contribute to an exponential absorptiorn tail (the so-called Urbach tail) as a result of interplay between transfer energy and Gaussian-distributed site energies. Introduction or a negative interband correlation leadsto a red shift of the absorption edge. This effect is discussed in connection withthe photo-structural change observed in chalcogenide glasses.
- 社団法人日本物理学会の論文
- 1981-07-15
著者
-
Toyozawa Yutaka
The Institute For Solid State Physics The University Of Tokyo
-
Abe Shuji
The Institute For Solid State Physics The University Of Tokyo
関連論文
- Spin-Dependent Final-State Interactions in Core Photoelectron Spectra of Metals with Incomplete Shell.I
- Charge Transfer Instability with Structural Change. I. Two-Sites Two-Electrons System
- Coexistence of Local and Band Characters in the Absorption Spectra of Solids : II. Calculations for the Simple Cubic Lattice
- Coexistence of Local and Band Characters in the Absorption Spectra of Solids : I. Formulation
- Discontinuity in the Polaron Ground State
- Cyclotron resonance of hot electrons in pure germanium
- Inter-Polaron Interaction and Bipolaron Formation.I
- Vibration-Induced Splittings of the A and C Absorption Bands of Heavy Metal Ions in Alkali-Halides
- Charge Transfer Instability with Structural Change.III.Effect of Fluctuation in One-Dimensional N-Sites N-Electrons System
- Charge Transfer Instability with Structural Change.II.Mean Field Theory for One-Dimensional N-Sites N-Electrons System
- Interband Absorption Spectra of Disordered Semiconductors in the Coherent Potential Approximation
- Interband Correlation of Potential Fluctuations and the Photostructural Change in Glassy Semiconductors
- Numerical Experiments on the Absorption Lineshape of the Exciton under Lattice Vibrations.II.The Average Oscillator Strength per State.
- Numerical Experiments on the Absorption Lineshape of the Exciton under Lattice Vibrations.IV.The Indirect Edge
- Numerical Experiments on the Absorption Lineshape of the Exciton under Lattice Vibrations. V.Impurities
- Numerical Experiments on the Absorption Lineshape of the Exciton under Lattice Vibrations.I.The Overall Lineshape.
- Self-Trapping in Mixed Crystal : Clustering, Dimensionality, Percolation
- Theory of the Jahn-Teller Effect on the Optical Spectra of Degenerate Exciton
- Exciton-Phonon Interaction and Optical Spectra : Self-trapping, Zero-Phonon Line and Phonon Sidebands
- Numerical Experiments on the Absorption Lineshape of the Exciton under Lattice Vibrations.III.The Urbach Rule
- Urbach-Martienseen Rule and Exciton Trapped Momentarily by Lattice Vibrations
- A Proposed Model of Excitonic Mechanism for Defect Formation in Alkali Halides
- Resonance and Relaxation in Light Scattering