Spin-polarized electron transport and emission from strained superlattices

Yuri A. Mamaev; Arsen V. Subashiev; Yuri P. Yashin; Anton N. Ambrajei; Alexander V. Roschansky

doi:10.1117/12.417689

1 February 2001 Spin-polarized electron transport and emission from strained superlattices

Yuri A. Mamaev, Arsen V. Subashiev, Yuri P. Yashin, Anton N. Ambrajei, Alexander V. Roschansky

Proceedings Volume 4348, Fourth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering; (2001) https://doi.org/10.1117/12.417689
Event: Fourth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, 2000, St. Petersburg, Russian Federation

Abstract

We report the results on polarized electron emission from a new strained wide-gap Al_xIn_yGa_1-x-yAs/Al_zGa_{1- z}As SL with tunable position of polarization maximum. These SL's were optimized to have a minimal conduction-band offset which comes from the band line-up between the semiconductor layers of the SL. The In layer content was chosen to give minimal conduction-band offset with large strain splitting of the V-band. Simultaneous changing of Al content in both SL layers provides variation of the structure band gap. We demonstrate that tuning of the SL to the excitation energy can be achieved without loss of the electron polarization. The polarization of up to 84% was measured at room temperature.

Citation Download Citation

Yuri A. Mamaev, Arsen V. Subashiev, Yuri P. Yashin, Anton N. Ambrajei, and Alexander V. Roschansky "Spin-polarized electron transport and emission from strained superlattices", Proc. SPIE 4348, Fourth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (1 February 2001); https://doi.org/10.1117/12.417689

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