Donor-related photoionization cross-section of GaAs-(Ga,Al)As quantum dots: hydrostatic pressure effects

被引：24
|
作者：
Correa, JD
Porras-Montenegro, N
Duque, CA
机构：
[1] Univ Antioquia, Inst Fis, Medellin, Colombia
[2] Univ Valle, Dept Fis, Cali, Colombia
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2004年 / 241卷 / 10期
关键词：
D O I：
10.1002/pssb.200404908
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Using a variational method and the effective-mass approximation, we calculated the binding energy for shallow-donor impurities in spherical GaAs-(Ga, Al)As quantum dots. In this paper we present results for different dimensions of the structure and radial impurity positions. Calculations include the hydrostatic pressure effects. We discuss the hydrostatic pressure dependence on the binding energy and the photoionization cross-section. The measurement of photoionization in such systems would be of great interest in understanding the optical properties of carriers in quantum dots. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：2440 / 2443
页数：4
相关论文
共 50 条
  • [1] Hydrostatic-pressure effects on the donor binding energy in GaAs-(Ga, Al) As quantum dots
    Perez-Merchancano, S. T.
    Paredes-Gutierrez, H.
    Silva-Valencia, J.
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2007, 19 (02)
  • [2] DONOR AND ACCEPTOR STATES IN GaAs-(Ga, Al)As QUANTUM DOTS: EFFECTS OF HYDROSTATIC PRESSURE AND AN INTENSE LASER
    Miguez, A.
    Franco, R.
    Silva-Valencia, J.
    [J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2010, 24 (29): : 5761 - 5770
  • [3] Effects of hydrostatic stress on the density of impurity states and donor-related optical absorption spectra in GaAs-(Ga,Al)As quantum wells
    López, SY
    Porras-Montenegro, N
    Duque, CA
    [J]. 10TH INTERNATIONAL CONFERENCE ON SHALLOW LEVEL CENTERS IN SEMICONDUCTORS (SLCS-10), PROCEEDINGS, 2003, : 648 - 651
  • [4] Donor-related density of states and polarizability in a GaAs-(Ga, Al)As quantum-well under hydrostatic pressure and applied electric field
    Morales, AL
    Montes, A
    López, SY
    Raigoza, N
    Duque, CA
    [J]. 10TH INTERNATIONAL CONFERENCE ON SHALLOW LEVEL CENTERS IN SEMICONDUCTORS (SLCS-10), PROCEEDINGS, 2003, : 652 - 656
  • [5] The effects of temperature and hydrostatic pressure on the photoionization cross-section and binding energy of shallow donor impurities in quantum dots
    Yesilgul, U.
    Kasapoglu, E.
    Sari, H.
    Sokmen, I.
    [J]. SUPERLATTICES AND MICROSTRUCTURES, 2010, 48 (06) : 509 - 516
  • [6] Combined effects of hydrostatic pressure and electric field on the donor binding energy, polarizability, and photoionization cross-section in double GaAs/Ga1-xAlxAs quantum dots
    Ed-Dahmouny, Ayoub
    Sali, Ahmed
    Es-Sbai, Najia
    Arraoui, Reda
    Jaouane, Mohammed
    Fakkahi, Abdelghani
    El-Bakkari, Kamal
    Duque, C. A.
    [J]. EUROPEAN PHYSICAL JOURNAL B, 2022, 95 (08):
  • [7] Donor-related magneto-optical absorption spectra of GaAs-(Ga,Al)As quantum wells
    Barbosa, LHM
    Latge, A
    Oliveira, LE
    deDiosLeyva, M
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1997, 9 (15) : 3181 - 3187
  • [8] Binding energy and photoionization cross-section in GaAs quantum well-wires and quantum dots: Magnetic field and hydrostatic pressure effects
    Correa, JD
    Porras-Montenegro, N
    Duque, CA
    [J]. BRAZILIAN JOURNAL OF PHYSICS, 2006, 36 (2A) : 387 - 390
  • [9] Hydrostatic pressure effects on the donor impurity-related photoionization cross-section in cylindrical-shaped GaAs/GaAlAs quantum well wires
    Correa, JD
    Cepeda-Giraldo, O
    Porras-Montenegro, N
    Duque, CA
    [J]. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2004, 241 (14): : 3311 - 3317
  • [10] Hydrostatic pressure and magnetic field effects on the exciton states in vertically coupled GaAs-(Ga, al) as quantum dots
    Mora-Ramos, M. E.
    Rodriguez, A. H.
    Lopez, S. Y.
    Duque, C. A.
    [J]. PIERS 2008 HANGZHOU: PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM, VOLS I AND II, PROCEEDINGS, 2008, : 1138 - +
12345