Magnetopolaron effects on the optical absorptions in a parabolic quantum dot

【摘要】 We investigate the influence of magnetic field on the linear and nonlinear optical absorptions in a parabolic quantum dot(QD) through electron-LO-phonon interaction by using the Lee-Low-Pines-Huybrecht variational calculation for all coupling strengths.We apply our calculations to GaAs which is a good candidate in Ⅲ-Ⅴgroup semiconductors.We find that all the absorption spectra are strongly affected by the electron-LO-phonon interaction,the applied magnetic field,and the Coulomb binding potential.Furthermore,due to the Zeeman splitting,the response of all the absorption values in transition(+1→0) and(-1→0) closely depends on the magnetic field increasing.更多还原

【Abstract】 We investigate the influence of magnetic field on the linear and nonlinear optical absorptions in a parabolic quantum dot(QD) through electron-LO-phonon interaction by using the Lee-Low-Pines-Huybrecht variational calculation for all coupling strengths.We apply our calculations to GaAs which is a good candidate in Ⅲ-Ⅴgroup semiconductors.We find that all the absorption spectra are strongly affected by the electron-LO-phonon interaction,the applied magnetic field,and the Coulomb binding potential.Furthermore,due to the Zeeman splitting,the response of all the absorption values in transition(+1→0) and(-1→0) closely depends on the magnetic field increasing.更多还原