Many-Body Effects and Bandgap Renormalization in H-Shaped Quantum Wires

• Authors: K. Nozari , S. Akbari , F. Fayeghi , M. Mirzaie
• Languages of publication: EN

Abstracts

EN

In this paper, bound states energies and corresponding wave functions of H-shaped quantum wires are calculated numerically in the presence of the external magnetic and electric fields. This analysis was done within the Landau gauge. With a suitable definition of the external confinement potential, we present a numerical algorithm to calculate the profile of the probability distribution of charge carriers. Our analysis shows that in the presence of the external electric and magnetic fields, bound state properties of the carriers are sensitive functions of an asymmetric parameter a= W_{x}/W_{y} which measures the relative width of the quantum well in two directions. We also study many-body effect of the bandgap renormalization in this quasi-one-dimensional system within the dynamical random phase approximation in its leading order.

Keywords

EN

71.35.Ee; 71.45.Gm

Discipline

• 71.35.Ee: Electron-hole drops and electron-hole plasma
• 71.45.Gm: Exchange, correlation, dielectric and magnetic response functions, plasmons

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 3
• Pages: 721-731

Dates

published

2009-03

received

2008-09-16

(unknown)

2008-12-17

Contributors

author

K. Nozari

• Department of Physics, Faculty of Basic Sciences, University of Mazandaran, P.O. Box 47416-1467, Babolsar, Iran
• Nano and Biotechnology Research Group, Faculty of Basic Sciences, University of Mazandaran, P.O. Box 47416-1467, Babolsar, Iran

author

S. Akbari

• Department of Physics, Faculty of Basic Sciences, University of Mazandaran, P.O. Box 47416-1467, Babolsar, Iran

author

F. Fayeghi

• Department of Physics, Payam-e Nour University, P.O. Box 919, Mashad, Iran

author

M. Mirzaie

• Department of Physics, Iran University of Science and Technology, Tehran, Iran

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Identifiers

DOI

10.12693/APhysPolA.115.721