Optical absorption and refractive index changes in a semiconductor quantum ring: Electric field and donor impurity effects

被引：31

作者：

Acosta, Ruben E. ^{[1
]}

Morales, A. L. ^{[1
]}

Duque, C. M. ^{[1
]}

Mora-Ramos, M. E. ^{[2
]}

Duque, C. A. ^{[1
]}

机构：

[1] Univ Antioquia UdeA, Fac Ciencias Exactas & Nat, Inst Fis, Grp Mat Condensada UdeA, Calle 70 52-21, Medellin, Colombia

[2] Univ Autonoma Estado Morelos, Inst Invest Ciencias Basicas & Aplicadas, Ctr Invest Ciencias, Av Univ 1001, Cuernavaca 62209, Morelos, Mexico

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2016年 / 253卷 / 04期

关键词：

donor impurities; Optical absorption; quantum rings; refractive index; semiconductors; INVERSE-SQUARE POTENTIAL; HYDROGENIC IMPURITY; HYDROSTATIC-PRESSURE; BINDING-ENERGY; SUSCEPTIBILITY; DISC; PHOTOLUMINESCENCE; COEFFICIENTS; RESPONSES; STATES;

D O I：

10.1002/pssb.201552514

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The electron states in a two-dimensional quantum dot ring are calculated in the presence of a donor impurity atom under the effective mass and parabolic band approximations. The effect of an externally applied electric field is also taken into account. The wavefunctions are obtained via the diagonalization of the problem Hamiltonian using a 2D expansion. The impurity-related optical response is analyzed via the optical absorption and relative refractive index coefficients.

引用

页码：744 / 754

页数：11

共 47 条

[1] Micro-photoluminescence of GaAs/AlGaAs triple concentric quantum rings [J].

Abbarchi, Marco ;

Cavigli, Lucia ;

Somaschini, Claudio ;

Bietti, Sergio ;

Gurioli, Massimo ;

Vinattieri, Anna ;

Sanguinetti, Stefano .

NANOSCALE RESEARCH LETTERS, 2011, 6 :1-5

[2]

AHN D, 1987, IEEE J QUANTUM ELECT, V23, P2196

[3] Effects of applied electric and magnetic fields on the nonlinear optical properties of asymmetric GaAs/Ga1-xAlxAs double inverse parabolic quantum well [J].

Al, E. B. ;

Ungan, F. ;

Yesilgul, U. ;

Kasapoglu, E. ;

Sari, H. ;

Sokmen, I. .

OPTICAL MATERIALS, 2015, 47 :1-6

[4] Linear and nonlinear optical absorption coefficients in GaAs/Ga1-xAlxAs concentric double quantum rings: Effects of hydrostatic pressure and aluminum concentration [J].

Baghramyan, H. M. ;

Barseghyan, M. G. ;

Kirakosyan, A. A. ;

Restrepo, R. L. ;

Duque, C. A. .

JOURNAL OF LUMINESCENCE, 2013, 134 :594-599

[5] Magnetoexciton transitions in GaAs-Ga1-xAlxAs quantum wells [J].

Barticevic, Z ;

Pacheco, M ;

Duque, CA ;

Oliveira, LE .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2002, 14 (05) :1021-1033

[6] A theoretical study of exciton energy levels in laterally coupled quantum dots [J].

Barticevic, Z. ;

Pacheco, M. ;

Duque, C. A. ;

Oliveira, L. E. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2009, 21 (40)

[7] Regulated and entangled photons from a single quantum dot [J].

Benson, O ;

Santori, C ;

Pelton, M ;

Yamamoto, Y .

PHYSICAL REVIEW LETTERS, 2000, 84 (11) :2513-2516

[8] INFRARED OPTICAL-ABSORPTION IN IMPERFECT PARABOLIC QUANTUM-WELLS [J].

BREY, L ;

DEMPSEY, J ;

JOHNSON, NF ;

HALPERIN, BI .

PHYSICAL REVIEW B, 1990, 42 (02) :1240-1247

[9] OPTICAL AND MAGNETO-OPTICAL ABSORPTION IN PARABOLIC QUANTUM WELLS [J].

BREY, L ;

JOHNSON, NF ;

HALPERIN, BI .

PHYSICAL REVIEW B, 1989, 40 (15) :10647-10649

[10] Optical nonlinearities associated to applied electric fields in parabolic two-dimensional quantum rings [J].

Duque, C. M. ;

Morales, A. L. ;

Mora-Ramos, M. E. ;

Duque, C. A. .

JOURNAL OF LUMINESCENCE, 2013, 143 :81-88

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