Excitonic susceptibility in near triangular quantum wells

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• 作者：A. Anitha ; M. Arulmozhi
• 关键词：Quantum wells ; Exciton ; Binding energy ; Diamagnetic susceptibility ; Magnetic field
• 刊名：Indian Journal of Physics
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：91
• 期：3
• 页码：287-292
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics, general; Astrophysics and Astroparticles;
• 出版者：Springer India
• ISSN：0974-9845
• 卷排序：91

文摘

Diamagnetic susceptibility and binding energy of an exciton in a near triangular quantum well, with potential profile proportional to |z|2/3 composed of GaAs/Ga_1−xAl_xAs and ZnO/Zn_1−xMg_xO are calculated as a function of the wellwidth and concentration of Al and Mg respectively varying the magnetic field applied along growth direction (i.e. z-axis). Diamagnetic susceptibility of light hole exciton and heavy hole exciton, shows inverse behaviors in the two materials below 20 nm wellwidth and the binding energy of both excitons increases, as the magnetic field increases. The results obtained, are compared with those of quantum wells with varied potential profiles and the experimental results reported in the literature.