Browsing Physics by Author "Tshipa, Moletlanyi"
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Diamagnetic susceptibility and optical properties of a spherical quantum dot: effects of the parabolic and the shifted parabolic potentials
Tshipa, Moletlanyi (Springer Science+Business Media, LLC, part of Springer Nature, https://www.springer.com/journal/11082, 2019-06-22)Centred charge donor related diamagnetic susceptibility and optical properties of a spherical GaAs quantum dot are presented. In particular, effects of intrinsic parabolic and shifted parabolic potentials on these quantities ... -
Effect of an inverse parabolic confining electric potential on third harmonic generation in cylindrical quantum wires
Tshipa, Moletlanyi (EnPress Publisher, LLC, https://systems.enpress-publisher.com, 2019)A theoretical investigation of the effect of an inverse parabolic potential on third harmonic generation in cylindrical quantum wires is presented. The wave functions are obtained as solutions to Schrödinger equation solved ... -
The effects of cup-like and hill-like parabolic confining potentials on photoionization cross section of a donor in a spherical quantum dot
Tshipa, Moletlanyi (EDP Sciences, Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, https://www.springer.com/journal/10051, 2016-08-08)A theoretical investigation of the effects of hill-like and cup-like parabolic confining electric potentials on photoionization cross section (PCS) in a spherical quantum dot is presented. The hill-like and the cup-like ... -
Electron states in a sinusoidally deformed cylindrical quantum wire
Tshipa, Moletlanyi (Springer Nature Switzerland AG. Part of Springer Nature, https://link.springer.com/journal/40094, 2017)Electron states in a sinusoidally deformed cylindrical nanowire are probed within the effective mass approximation. The nanowire is immersed in a homogeneous magnetic field applied parallel to the axis of the wire. The ... -
Electron-LO-phonon intrasubband scattering rates in a hollow cylinder under the influence of a uniform axial applied magnetic field
Masale, Monkami; Tshipa, Moletlanyi (Springer Science+Business Media, LLC, part of Springer Nature, https://www.springer.com/journal/11082, 2021-11-06)Scattering rates arising from the interactions of electrons with bulk longitudinal optical (LO) phonon modes in a hollow cylinder are calculated as functions of the inner radius and the uniform axial applied magnetic field. ... -
Optical properties of GaAs nanowires with an electric potential that varies inversely with the square of the radial distance
Tshipa, Moletlanyi (Hindawi, https://www.hindawi.com/, 2019-07-10)A theoretical investigation of optical properties of a cylindrical quantum wire (CQW) is presented. The properties studied were optical absorption coefficient (AC) and change in refractive index (CRI) of the quantum wire. ... -
Optical transition rates in a cylindrical quantum wire with an inverse parabolic potential
Tshipa, Moletlanyi; Masale, Monkami (Opast Group LLC, https://www.opastpublishers.com/journal/advances-in-theoretical-computational-physics, 2019-05-25)Electron transition rates due to interaction with circularly polarized light incident along the axis of a free-standing solid cylindrical nanowire are evaluated in the dipole approximation. In this case, the allowed optical ... -
Photoionization cross-section in a GaAs spherical quantum shell: the effect of parabolic confining electric potentials
Tshipa, Moletlanyi; Sharma, Lalit K.; Pratap, Surender (Springer Nature, https://www.springer.com/, 2021-06-22)Theoretical study on binding energies due to a centred charged impurity and the associated photoionization cross-section (PCS) in a spherical shell are presented. This was achieved by solving the Schrödinger equation within ... -
Probing semiconductor quantum well qubits and associated Shannon entropy using semi‑relativistic quantum mechanics
Tshipa, Moletlanyi (Springer Nature, https://www.springer.com/, 2023-08-07)Electron states in GaAs, GaN and AlN quantum wells are studied by solving a semi-relativistic wave equation within the effective mass approximation. The quantum states are in turn used to probe the properties of two-level ...