Electric field effect on the binding energy of a non‐hydrogenic donor impurity in a cylindrical cross‐sectional quantum well wire

Abstract

The effect of an electric field on the non-hydrogenic binding energy of a shallow donor impurity in a cylindrical cross-sectional GaAs-(Ga,Al)As quantum well wire (QWW) was investigated. Within the effective mass approximation, the non-hydrogenic binding energy of the donor impurity was calculated by a variational method as a function of the wire radius, donor impurity position and applied electric field. The results show that the non-hydrogenic binding energy of the donor impurity located around the centre is larger than that of the hydrogenic binding energy. The difference in binding energy of an on-centre shallow donor impurity in the two regimes increases more rapidly with decreasing QWW radius than for other impurity positions. It has been found that the sensitivity of the donor binding energies to the applied electric field in both regimes is almost the same.

Role of Spatial Impurity Spread on the Transition Dynamics of Doped GaAs Quantum Dot in Presence of Noise

“…Furthermore, impurity doping is highly acclaimed for achieving desired change in the nonlinear optical (NLO) properties of low‐dimensional semiconductor nanostructures. In consequence, studies on impurity doped low‐dimensional semiconductor nanostructures have been widely explored [ 2–16 ] with special thrust on their NLO properties. [ 17–41 ]…”

Adiabatic Switching Among Quantum Dot Eigenstates: Role of Anharmonicity and Gaussian White Noise

“…QDs are also renowned for displaying unique properties such as tunability and a broad color spectrum. In view of the tremendous applications of LDSSs in microelectronics and optoelectronics, we find a rich literature dealing with LDSSs [ 1–12 ] with special stress on their NLO properties. [ 1,2,7,13–32 ]…”

Profiles of Static Quadrupole Polarizability of Impurity‐Doped Quantum Dots Driven by Gaussian White Noise

“…Electric field ( F ) and magnetic field ( B ) are two prominent physical quantities which are well known for providing valuable information on LDSS. The incorporation of F and B , in effect, alters the effective confinement potential of LDSS.…”

“…[4] Thus, we can come across a large number of studies that deal with impurity doping in LDSS, [5][6][7][8] showing special interest in nonlinear optical (NLO) properties. [9][10][11][12][13][14][15][16][17][18][19][20][21] Electric field (F) [22][23][24][25][26][27][28][29][30][31][32][33] and magnetic field (B) [24,28,30,[34][35][36][37] are two prominent physical quantities which are well known for providing valuable information on LDSS. The incorporation of F and B, in effect, alters the effective confinement potential of LDSS.…”