Nonpolar optical bound polaron in an asymmetrical Gaussian confinement potential quantum well under magnetic field

IF 2.9 3区物理与天体物理 Q3 NANOSCIENCE & NANOTECHNOLOGY

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2025-02-01 DOI:10.1016/j.physe.2024.116173

F. Manfouo , S.L. Dongmo Tedo , S.J. Nobosse Nguemeta , B. Donfack , S.C.N. Nguemasson , J.V. Nguepnang , A.J. Fotue

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引用次数: 0

Abstract

The properties of weak coupling optical deformation potential (ODP) bound polaron in asymmetrical Gaussian confinement potential quantum well (AGCPQW) in the presence of magnetic field (MF) has been examined. The ground state energy (GSE) and the ground state binding energy (GSBE) of ODP bound polaron are calculated following Lee-Low (LLP) Pines approach. The influence of MF, the height of AGCPQW, the electron-phonon (e-p) coupling constant and Debye cut-off wavenumber (DCOW) on the GSE and the GSBE are also studied. It is shown that the GSE is a decreasing function of height of AGCPQW, e-p coupling constant, Coulombic potential and DCOW. In addition it is an expanding function of the height of AGCPQW. We also found that the GSBE enhanced with height of AGCPQW, e-p coupling strength, Coulombic potential and DCOW, whereas it is a decayed one of the cyclotron frequency. At some critical points the GSE is equal to the GSBE meaning that the free electron and phonon behave as a double polaron helpful for the comprehension of the superconductivity. It is found that the modulation of the height of AGCPQW, the cyclotron frequency, e-p coupling constant and DCOW lead to the control of the properties of the ODP bound polaron in AGCPQW.

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来源期刊

Physica E-low-dimensional Systems & Nanostructures 物理-纳米科技

CiteScore

7.30

自引率

6.10%

发文量

356

审稿时长

65 days

期刊介绍： Physica E: Low-dimensional systems and nanostructures contains papers and invited review articles on the fundamental and applied aspects of physics in low-dimensional electron systems, in semiconductor heterostructures, oxide interfaces, quantum wells and superlattices, quantum wires and dots, novel quantum states of matter such as topological insulators, and Weyl semimetals. Both theoretical and experimental contributions are invited. Topics suitable for publication in this journal include spin related phenomena, optical and transport properties, many-body effects, integer and fractional quantum Hall effects, quantum spin Hall effect, single electron effects and devices, Majorana fermions, and other novel phenomena. Keywords: • topological insulators/superconductors, majorana fermions, Wyel semimetals; • quantum and neuromorphic computing/quantum information physics and devices based on low dimensional systems; • layered superconductivity, low dimensional systems with superconducting proximity effect; • 2D materials such as transition metal dichalcogenides; • oxide heterostructures including ZnO, SrTiO3 etc; • carbon nanostructures (graphene, carbon nanotubes, diamond NV center, etc.) • quantum wells and superlattices; • quantum Hall effect, quantum spin Hall effect, quantum anomalous Hall effect; • optical- and phonons-related phenomena; • magnetic-semiconductor structures; • charge/spin-, magnon-, skyrmion-, Cooper pair- and majorana fermion- transport and tunneling; • ultra-fast nonlinear optical phenomena; • novel devices and applications (such as high performance sensor, solar cell, etc); • novel growth and fabrication techniques for nanostructures