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In the present work, the optical absorption coefficients (OACs) and the changes in the refractive index (RI) in asymmetrical Gaussian potential quantum wells (QWs) with the applied electric field are studied in detail. We find both energy and wavefunction for low-lying state are wrong in the previous work (Guo and Du, 2013; Wu et al., 2014; Zhai, 2014). Simultaneously, we obtain new and reliable results...
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