The electronic properties of a coaxial square GaAs/AlxGa1-xAs quantum well wire in an electric field
Küçük Resim Yok
Tarih
2009
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The binding energy of a hydrogenic impurity in a coaxial square quantum well wire (QWW) system is investigated as a function of the barrier thickness for two different impurity positions under the electric fields. Within the effective mass approximation, the ground state energy in the presence of an external electric field applied perpendicular to the symmetry axis of the wire system is calculated using the finite difference method. Then, the ground state binding energy of a hydrogenic impurity is found employing a variational method. It is found that the binding energy in critical barrier thickness shows an increase or decrease depending on the impurity position and electric field strength. (C) 2009 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
The Finite Difference Method, Multilayers, Impurity Levels, Shallow Donor Impurities, Binding-Energy, Magnetic-Field, Hydrogenic Impurity, Ground-State, Finite, Polarizability, Confinement, Exciton, Systems
Kaynak
Physica E-Low-Dimensional Systems & Nanostructures
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
41
Sayı
8
