Interfacial confinement in core-shell nanowires due to high dielectric mismatch

被引：11
|
作者：
Sousa, A. A. [1 ]
Pereira, T. A. S. [1 ]
Chaves, A. [2 ]
de Sousa, J. S. [2 ]
Farias, G. A. [2 ]
机构：
[1] Univ Fed Mato Grosso, Inst Phys, BR-78060900 Cuiaba, Mato Grosso, Brazil
[2] Univ Fed Ceara, Dept Phys, BR-60455900 Fortaleza, Ceara, Brazil
来源：
APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 21期
关键词：
GROWTH;
D O I：
10.1063/1.4720402
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We theoretically investigate the role of the dielectric mismatch between materials on the energy levels and recombination energies of a core-shell nanowire. Our results demonstrate that when the dielectric constant of the core material is lower than that of the shell material, the self-image potential pushes the charge carriers towards the core-shell interface in such a way that the ideal confinement model is no longer suitable. The effects of this interfacial confinement on the electronic properties of such wires, as well as on its response to applied magnetic fields, are discussed. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4720402]
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页数：4
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