Interband magneto-optics of InAs1−xSbx
Interband magneto-optics of InAs1−xSbx
复制标题
InAs1−xSbx 的带间磁光
DOI：
10.1088/0268-1242/7/7/005
复制
发表时间：
1992
影响因子：
1.9
通讯作者：
C. Pidgeon
中科院分区：
文献类型：
--
作者：
S. Smith;C. Phillips;R. H. Thomas;R. Stradling;I. Ferguson;A. Norman;B. Murdin;C. Pidgeon
已经获得了一系列 MBE 生长的外延 InAs1-xSbx 合金层的低温带间磁吸收光谱。光谱最小值的场依赖性已在 Pidgeon 和 Brown 模型中拟合，以确定全套频带参数。特别地，直接确定能隙Eg和价-导带相互作用矩阵元素Ep。与最近的导带质量的回旋共振测量得到了很好的一致性。合金有序效应导致中间合金范围内的迁移率显着下降，同时带隙发生较大的弯曲。动量矩阵元素在整个合金范围内也表现出弯曲。通过合金无序模型获得了公平的一致性。
Low-temperature interband magnetoabsorption spectra have been obtained for a range of MBE-grown epitaxial InAs1-xSbx alloy layers. The field dependence of the spectral minima has been fitted within the Pidgeon and Brown model to determine a full set of band parameters. In particular a direct determination is made of the energy gap Eg, and the valence-conduction band interaction matrix element Ep. Good agreement is obtained with recent cyclotron resonance measurements of the conduction band mass. The alloy ordering effects result in a pronounced drop in mobility in the mid-alloy range together with a large bowing in the bandgap. The momentum matrix elements also show bowing across the alloy range. Fair agreement is obtained with alloy disorder models.