2-DELTA-FUNCTION GENERALIZED PLASMA POLE MODEL FOR 1ST PRINCIPLE CALCULATIONS OF QUASI-PARTICLE ENERGIES IN MANY-ELECTRON SYSTEMS
文献类型：期刊论文
| 作者 | WANG JQ ; GU ZQ ; LI MF |
| 刊名 | communications in theoretical physics
 |
| 出版日期 | 1991 |
| 卷号 | 15期号:4页码:395-402 |
| 关键词 | SEMICONDUCTORS INSULATORS SI GE |
| ISSN号 | 0253-6102 |
| 通讯作者 | wang jq acad sinica grad sch dept phys beijing 100039 peoples r china |
| 中文摘要 | to evaluate the dynamical effects of the screened interaction in the calculations of quasiparticle energies in many-electron systems a two-delta-function generalized plasma pole model (gpp) is introduced to simulate the dynamical dielectric function. the usual single delta-function gpp model has the drawback of over simplifications and for the crystals without the center of symmetry is inappropriate to describe the finite frequency behavior for dielectric function matrices. the discrete frequency summation method requires too much computation to achieve converged results since ab initio calculations of dielectric function matrices are to be carried out for many different frequencies. the two-delta gpp model is an optimization of the two approaches. we analyze the two-delta gpp model and propose a method to determine from the first principle calculations the amplitudes and effective frequencies of these delta-functions. analytical solutions are found for the second order equations for the parameter matrices entering the model. this enables realistic applications of the method to the first principle quasiparticle calculations and makes the calculations truly adjustable parameter free. |
| 学科主题 | 半导体物理 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2010-11-15 |
| 源URL | [http://ir.semi.ac.cn/handle/172111/14341]  |
| 专题 | 半导体研究所_中国科学院半导体研究所（2009年前） |
| 推荐引用方式 GB/T 7714 | WANG JQ,GU ZQ,LI MF. 2-DELTA-FUNCTION GENERALIZED PLASMA POLE MODEL FOR 1ST PRINCIPLE CALCULATIONS OF QUASI-PARTICLE ENERGIES IN MANY-ELECTRON SYSTEMS[J]. communications in theoretical physics,1991,15(4):395-402. |
| APA | WANG JQ,GU ZQ,&LI MF.(1991).2-DELTA-FUNCTION GENERALIZED PLASMA POLE MODEL FOR 1ST PRINCIPLE CALCULATIONS OF QUASI-PARTICLE ENERGIES IN MANY-ELECTRON SYSTEMS.communications in theoretical physics,15(4),395-402. |
| MLA | WANG JQ,et al."2-DELTA-FUNCTION GENERALIZED PLASMA POLE MODEL FOR 1ST PRINCIPLE CALCULATIONS OF QUASI-PARTICLE ENERGIES IN MANY-ELECTRON SYSTEMS".communications in theoretical physics 15.4(1991):395-402. |
入库方式： OAI收割
来源：半导体研究所
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