The energy state of an impurity donor in a type II quantum dot

被引：1

作者：

Causil, Dairo A. ^{[1
]}

Beltran, Carlos L. ^{[2
]}

Villamil, Pablo ^{[1
]}

机构：

[1] Univ Sucre, Grp Teoria Mat Condensada, Dept Matemat & Fis, Sincelejo, Colombia

[2] Univ Ind Santander, Escuela Fis, Bucaramanga, Colombia

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2015年 / 74卷

关键词：

Hydrogenic impurity; Quantum dot; Binding energy; Transition energy; WELL STRUCTURES; BINDING-ENERGY; X-VALLEYS; TRANSITIONS; ALAS;

D O I：

10.1016/j.physe.2015.05.036

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The objective of the following research is to show the results of applying the variational Rayleigh Ritz method to determine the binding energy of a hydrogenic impurity in Is like, 2p (+/-) -like and 2p(z)-like states, located in a cylindrical GaAs/AlAs quantum dot and in the presence of a uniform magnetic field applied in the axial direction. The binding energy of the Is-like state when its position varies along the axis of the cylinder is also presented. The results show that the energies decrease as the system volume increases. We also consider the competition between geometric and magnetic confinement. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：510 / 514

页数：5

共 18 条

[1] Binding energies of ground and excited donor states bound to X valleys in GaAs/AlAs type-II quantum wells
Carneiro, GN
Weber, G
[J]. PHYSICAL REVIEW B, 1998, 58 (12): : 7829 - 7833
[2] Chitra S.R., 2013, IOSR J APPL PHYS, V3
[3] Competition between shallow-impurity and T-shaped quantum-wire states
Degani, MH
[J]. PHYSICAL REVIEW B, 2002, 66 (23): : 1 - 4
[4] OPTICALLY DETECTED MAGNETIC-RESONANCE OF GROUP-IV AND GROUP-VI IMPURITIES IN ALAS AND ALXGA1-XAS WITH X-GREATER-THAN-OR-EQUAL-TO-0.35
GLASER, ER
KENNEDY, TA
MOLNAR, B
SILLMON, RS
SPENCER, MG
MIZUTA, M
KUECH, TF
[J]. PHYSICAL REVIEW B, 1991, 43 (18): : 14540 - 14556
[5] BINDING OF SHALLOW DONOR IMPURITIES IN QUANTUM-WELL STRUCTURES
JAROSIK, NC
MCCOMBE, BD
SHANABROOK, BV
COMAS, J
RALSTON, J
WICKS, G
[J]. PHYSICAL REVIEW LETTERS, 1985, 54 (12) : 1283 - 1286
[6] Hydrogenic donor impurity in a cubic quantum dot: effect of position-dependent effective mass
Khordad, R.
[J]. EUROPEAN PHYSICAL JOURNAL B, 2012, 85 (04)
[7] INFRARED TRANSITIONS BETWEEN HYDROGENIC STATES IN CYLINDRICAL GAAS-(GA,AL)AS QUANTUM-WELL WIRES
LATGE, A
PORRASMONTENEGRO, N
OLIVEIRA, LE
[J]. PHYSICAL REVIEW B, 1992, 45 (16) : 9420 - 9423
[8] Lee S.T., 1995, PHYS REV, P1942
[9] PHOTOLUMINESCENCE STUDY OF CONFINED DONORS IN GAAS/ALXGA1-XAS QUANTUM WELLS
LIU, X
PETROU, A
MCCOMBE, BD
RALSTON, J
WICKS, G
[J]. PHYSICAL REVIEW B, 1988, 38 (12): : 8522 - 8525
[10] Perry T.A., 1985, PHYS REV LETT, V54

← 1 2 →