HYDROGENIC IMPURITY IN QUANTUM-WELL WIRES EFFECTS OF THE IMAGE CHARGES

被引：0
作者：
THOAI, DBT
机构：
来源：
SOLID STATE COMMUNICATIONS | 1992年 / 81卷 / 11期
关键词：
D O I：
暂无
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The ground state binding energy of a hydrogenic impurity placed on the axis of a cylindrical quantum-well wire is calculated including the effects of the image charges and the finite barrier. A variational ansatz for the wave function of the electron, that takes into account the three-dimensional behavior of the electron in small wires, has been used. Numerical results for GaAs-Ga1-xAlxAs quantum-well wires show that the effects of the image charges cause a considerable enhancement of the ground state binding energy of the impurity, especially in the case of high values of the Al composition and small wires.
引用
收藏
页码：945 / 947
页数：3
相关论文
共 11 条
[1]   EXCITONS AND BIEXCITONS IN SEMICONDUCTOR QUANTUM WIRES [J].
BANYAI, L ;
GALBRAITH, I ;
ELL, C ;
HAUG, H .
PHYSICAL REVIEW B, 1987, 36 (11) :6099-6104
[2]   HYDROGENIC IMPURITY STATES IN QUANTUM-WELL WIRES [J].
BRYANT, GW .
PHYSICAL REVIEW B, 1984, 29 (12) :6632-6639
[3]   HYDROGENIC IMPURITY STATES IN QUANTUM-WELL WIRES - SHAPE EFFECTS [J].
BRYANT, GW .
PHYSICAL REVIEW B, 1985, 31 (12) :7812-7818
[4]  
Casey H. C., 1978, HETEROSTRUCTURE LASE
[5]   SHALLOW DONOR IMPURITIES IN GAAS-GA1-XALXAS QUANTUM-WELL STRUCTURES - ROLE OF THE DIELECTRIC-CONSTANT MISMATCH [J].
FRAIZZOLI, S ;
BASSANI, F ;
BUCZKO, R .
PHYSICAL REVIEW B, 1990, 41 (08) :5096-5103
[6]   HYDROGENIC IMPURITY STATES IN A QUANTUM WELL WIRE [J].
LEE, J ;
SPECTOR, HN .
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1984, 2 (01) :16-20
[7]  
Loudon R., 1959, AM J PHYS, V27, P649, DOI [10.1119/1.1934950, DOI 10.1119/1.1934950]
[8]   BAND OFFSETS FROM 2 SPECIAL GAAS-ALXGA1-XAS QUANTUM-WELL STRUCTURES [J].
MILLER, RC ;
GOSSARD, AC ;
KLEINMAN, DA .
PHYSICAL REVIEW B, 1985, 32 (08) :5443-5446
[9]   SCATTERING SUPPRESSION AND HIGH-MOBILITY EFFECT OF SIZE-QUANTIZED ELECTRONS IN ULTRAFINE SEMICONDUCTOR WIRE STRUCTURES [J].
SAKAKI, H .
JAPANESE JOURNAL OF APPLIED PHYSICS, 1980, 19 (12) :L735-L738
[10]   HYDROGENIC IMPURITY IN DOUBLE QUANTUM-WELLS - EFFECTS OF THE IMAGE CHARGES [J].
THOAI, DBT .
PHYSICA B-CONDENSED MATTER, 1991, 175 (04) :373-380
12