| Occupation Modulation of Higher Subbands in a Three—Barrier Tunnelling Structure with a Magnetic Field |
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| 引用本文： | 安龙,唐艳,等.Occupation Modulation of Higher Subbands in a Three—Barrier Tunnelling Structure with a Magnetic Field[J].中国物理快报,2002,19(10):1509-1512. |
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| 作者姓名： | 安龙 唐艳 |
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| 作者单位： | [1]NationalLaboratoryforSuperlatticesandMicrostructurews,InstituteofSemiconductore,CHineseAcademyofSciences,PoBox912,Beijing100083 [2]NationalLaboratoryforSuperlatticesandMicrostructurews,InstituteofSemicon |
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| 摘 要： | We verify that the magnetic suppression of intersubband LO or LA phonon scattering can give rise to a noticeable nonthermal occupation in higher-lying subbands.This is clearly determined by the relative intensity ratio of the interband photoluminesecence spectra for the E2-HH1 and E1-HH1 transitions.The observed phenomenon may provide an effective method to control the intersubband scattering rate,which is a key factor of the so-called quantum cascade lasers,This is helpful for the population inversiton between both the subbands in quantum wells.
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| 关 键 词： | 能带 LA声子散射 磁致伸缩 超导体 |
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