Dyakonov-Perel spin relaxation in InSb/AlxIn(1-x)Sb quantum wells
Dyakonov-Perel spin relaxation in InSb/AlxIn(1-x)Sb quantum wells
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DOI：
10.1103/physrevb.80.153307
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发表时间：
2009-10
影响因子：
3.7
通讯作者：
Jun Li;Kai Chang;F. Peeters
中科院分区：
文献类型：
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作者：
Jun Li;Kai Chang;F. Peeters
通过自洽地求解八波段Kane模型和泊松方程，从理论上研究了Dyakonov-Perel自旋弛豫时间。由于窄带隙半导体中异常自旋轨道相互作用，我们的结果显示出与单带模型不同的行为，并且与最近实验报告的实验值吻合得很好。L. Litvinenko等，新学报，8,49（2006）。我们发现在一定的电子密度下，沿[1 (1)/ bar0]的自旋排列出现了自旋弛豫时间的强共振增强。这个共振峰随着温度的升高而减弱。
We investigate theoretically the Dyakonov-Perel spin relaxation time by solving the eight-band Kane model and Poisson equation self-consistently. Our results show distinct behavior with the single-band model due to the anomalous spin-orbit interactions in narrow band-gap semiconductors, and agree well with the experiment values reported in recent experiment [K. L. Litvinenko et al., New J. Phys. 8, 49 (2006)]. We find a strong resonant enhancement of the spin relaxation time appears for spin align along [1 (1) over bar0] at a certain electron density at 4 K. This resonant peak is smeared out with increasing the temperature.