Spin-splitting of the energy band for strained superlattices with three materials

Yuan Tian; Yuheng Peng; Wei-You Chen; Shiyong Liu; BaoLin Zhang; Yixin Jin

doi:10.1117/12.252972

3 October 1996 Spin-splitting of the energy band for strained superlattices with three materials

Yuan Tian, Yuheng Peng, Wei-You Chen, Shiyong Liu, BaoLin Zhang, Yixin Jin

Proceedings Volume 2897, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications; (1996) https://doi.org/10.1117/12.252972
Event: Photonics China '96, 1996, Beijing, China

Abstract

In this paper, the valence band spin-splitting for the strained superlattices composed of Al_yGa_1-yAs, Al_xGa_1-xAs and GaAs was studied. By varying the material compositions or the layer thickness, we observed that the subbands corresponding to the spin-up and spin-down split when the superlattices unit-cell is asymmetrical about the cell center. The spin-splitting is defined as the splitting for both spin-up and spin-down in a spin degenerate subband. Moreover, the splitting mainly occurs at the region where the heavy hole and light hole interact on each other strongly.

Citation Download Citation

Yuan Tian, Yuheng Peng, Wei-You Chen, Shiyong Liu, BaoLin Zhang, and Yixin Jin "Spin-splitting of the energy band for strained superlattices with three materials", Proc. SPIE 2897, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications, (3 October 1996); https://doi.org/10.1117/12.252972

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