Ionicity Dependent Transverse Effective Charge of A^NB^<8-N> Compounds : Condensed Matter: Electronic Properties, etc.
スポンサーリンク
概要
- 論文の詳細を見る
We have calculated the transverse effective charge of A^NB^<8-N> compounds by taking account of the electronic polarization of valence electrons induced by the ionic displacements. It is shown that the transverse effective charge can be expressed as a function of the Phillips ionicity f_i from the relation between the most important pseudopotential and band gaps on the Jones-zone faces for zincblende and rock-salt structures. We have found a critical ionicity F_c that the ionicity dependent transverse effective charge Z_T(f_i) of both structures coincide with together. From the comparison with simple ionic model, the F_c is assigned as identical to the Phillips critical ionicity. We have found that when taking account of the effective valence number based on the modified f-sum rule the Z_T(f_i) well agree with the experimental results for tetrahedrally coordinated compounds. For rock-salt compounds, the two set model of most strongest pseudopotential is qualitatively discussed.
- 社団法人日本物理学会の論文
- 2001-05-15
著者
-
Tomoyose Tomozo
Department Of Physice And Earth Science Ryukyu University
-
Tomoyose Tomozo
Department of Physics and Earth Sciences, Ryukyu University
関連論文
- Ionic Dielectric Function of α-AgI Based upon Hubbard-Beeby Theory
- Transverse Effective Charges of A^NB^ Compounds with Zincblende Structure
- Analytical Model of Critical Ionicity for A^NB^ Binary Compounds
- Effect of Cation-Cation Correlation on Chemical Bond in Superionic Conductors α-AgI and α-CuBr(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- On Deviation from the Einstein Relation in Silver Chalcogenides
- Frequency Dependent Ion Hopping Based on Lattice Gas Model
- Proton Diffusion in Perovskite-Type Oxides Based on Small Polaron Model(Condensed Matter : Structure, Mechanical and Thermal Properties)
- Low-Frequency Opitial Mode in Superionic Conductors
- Effective Charges of Agl and CuX (X=Cl,Br,I)
- Ionicity Dependent Transverse Effective Charge of A^NB^ Compounds : Condensed Matter: Electronic Properties, etc.
- Density Fluctuation of Superionic Conductors Based on Lattice Gas Model