Impurity States and diamagnetic susceptibility of a donor in a triangular quantum well

Kalpana, P.; Reuben, A. Merwyn Jasper D.; Nithiananthi, P.; Jayakumar, K.

doi:10.1063/1.4980585

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…With the advantage of molecular beam epitaxy (MBE), one can fabricate the QW systems with graded confining potential of different shapes like parabolic [10] and triangular [11] instead of abrupt band offset like rectangular QW [12]. Among them, triangular quantum well (TQW) structures have attracted much attention in recent years because of their unique properties of quantum energy levels which is used for modeling metal-oxide semiconductor structures which have been widely studied by many researchers [13][14][15][16][17][18][19]. The strength of the coupling between the sp-band electrons and the d-electrons of Mn 2+ ions are precisely determined by the effective concentration of the Mn 2+ ions present in these DMS materials.…”

Section: Introductionmentioning

confidence: 99%

Magnetic field driven bound magnetic polaron with composition effect in semimagnetic triangular quantum well

Kalpana

Jayakumar

2019

Phys. Scr.

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Theoretical investigation has been carried out on the bound magnetic polaron (BMP) due to the strong exchange interaction between the charge carriers bound to an acceptor/donor impurity and the localized spins of Mn2+ ion in a semimagnetic triangular quantum well as a function of externally applied magnetic field. The effect of various combinations of the composition of Mn2+ ion in the well (xin) and in the barrier (xout), in such a way that xout – xin = x is always the same on the donor BMP, has been studied and the effect of triangular confining potential on the BMP associated with the heavy and light holes bound to an acceptor impurity has also been addressed. The binding energy of the acceptor/donor impurity has been calculated using variational technique in the effective mass approximation and the interaction between the magnetic moment of the Mn2+ ions and the spin of the carrier has been treated using mean field theory.

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Section: Introductionmentioning

confidence: 99%

Magnetic field driven bound magnetic polaron with composition effect in semimagnetic triangular quantum well

Kalpana

Jayakumar

2019

Phys. Scr.

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Impurity states and the diamagnetic susceptibility of a donor in a GaAs/Al x Ga 1-x As Triangular Quantum Well under hydrostatic pressure

Kalpana

Jayakumar

2017

Journal of Physics and Chemistry of Solids

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Shape effects on the diamagnetic susceptibility in Inhomogeneous Quantum Dots

M’zerd¹,

Edrissi²,

Chrafih³

et al. 2019

J. Phys.: Conf. Ser.

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We have studied the magnetic field effects on the diamagnetic susceptibility and binding energy of a hydrogenic impurity in a Inhomogeneous Quantum Dots by taking into account various geometries of these systems like spherical, cylindrical and cubic inhomogeneous Quantum Dots. The calculation was performed with the use of a variational method in the effective mass approximation. We describe the effect of the quantum confinement by an infinite deep potential. In order to make a comparison of the geometry, the results obtained for these tree structures show that the diamagnetic susceptibility and the binding energy is proportional with the magnetic field and strongly depend on the position of the donor. There is more pronounced for the large spherical layer.

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Impurity States and diamagnetic susceptibility of a donor in a triangular quantum well

Cited by 3 publications

References 5 publications

Magnetic field driven bound magnetic polaron with composition effect in semimagnetic triangular quantum well

Magnetic field driven bound magnetic polaron with composition effect in semimagnetic triangular quantum well

Impurity states and the diamagnetic susceptibility of a donor in a GaAs/Al x Ga 1-x As Triangular Quantum Well under hydrostatic pressure

Shape effects on the diamagnetic susceptibility in Inhomogeneous Quantum Dots

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