DIELECTRIC FORMALISM FOR A QUASI-ONE-DIMENSIONAL ELECTRON-GAS .2. DIELECTRIC FUNCTIONS AND POTENTIAL CORRELATORS

被引:18
作者
BOIKO, II [1 ]
SIRENKO, YM [1 ]
VASILOPOULOS, P [1 ]
机构
[1] ECOLE POLYTECH,MONTREAL H3C 3A7,QUEBEC,CANADA
来源
PHYSICAL REVIEW B | 1991年 / 43卷 / 09期
关键词
D O I
10.1103/PhysRevB.43.7224
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The dielectric function of an electron gas confined in a quantum wire is evaluated. The lateral confinement is modeled with a square or parabolic well and the vertical one with a triangular or square well. Screening is treated dynamically, and the electrons are assumed to interact with each other and with an external system taken to be impurities or phonons. Two cases are considered: (i) a homogeneous system and (ii) systems presenting inhomogeneity in one direction such as simple or double heterostructures. The potential correlators and dielectric functions of the external system are also evaluated. The results are useful for describing transport properties using the relevant quantum transport equations and relaxation frequencies.
引用
收藏
页码:7224 / 7230
页数:7
相关论文
共 9 条
[1]  
BOIKO II, 1989, UKR FIZ ZH+, V34, P265
[2]   SCATTERING OF 2-DIMENSIONAL ELECTRON-GAS ON THE SEMIBOUNDED 3-DIMENSIONAL ELECTRON-GAS [J].
BOIKO, II ;
SIRENKO, YM .
PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1990, 159 (02) :805-816
[3]  
BOIKO II, UNPUB
[4]   SCREENING AND ELEMENTARY EXCITATIONS IN NARROW-CHANNEL SEMICONDUCTOR MICROSTRUCTURES [J].
DASSARMA, S ;
LAI, WY .
PHYSICAL REVIEW B, 1985, 32 (02) :1401-1404
[5]  
GOLD A, 1989, PHYS REV B, V41, P7626
[6]   ELECTRON-STATES IN NARROW GATE-INDUCED CHANNELS IN SI [J].
LAUX, SE ;
STERN, F .
APPLIED PHYSICS LETTERS, 1986, 49 (02) :91-93
[7]   DIELECTRIC RESPONSE FUNCTION FOR A QUASI-ONE-DIMENSIONAL SEMICONDUCTING SYSTEM [J].
LEE, J ;
SPECTOR, HN .
JOURNAL OF APPLIED PHYSICS, 1985, 57 (02) :366-371
[8]   ELECTRON-SCATTERING RATES ASSOCIATED WITH THE POLAR OPTICAL PHONON INTERACTION IN A THIN IONIC SLAB [J].
RIDDOCH, FA ;
RIDLEY, BK .
PHYSICA B & C, 1985, 134 (1-3) :342-346