Spin-Polarized Electron Emission from Superlattices with Zero Conduction Band Offset | Zendy

J.E. Clendenin | Zendy

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Spin-Polarized Electron Emission from Superlattices with Zero Conduction Band Offset

Author(s) -

J.E. Clendenin

Publication year - 1998

Language(s) - English

Resource type - Reports

DOI - 10.2172/9958

Subject(s) - superlattice , condensed matter physics , electron , polarization (electrochemistry) , excitation , doping , band offset , conduction band , spin polarization , offset (computer science) , materials science , wavelength , physics , atomic physics , optoelectronics , chemistry , quantum mechanics , computer science , programming language

Electron spin polarization as high as 86% has been reproducibly obtained from strained Al{sub x}In{sub y}Ga{sub 1-x-y}As/GaAs superlattice with minimal conduction band offset at the heterointerfaces. The modulation doping of the SL provides high polarization and high quantum yield at the polarization maximum. The position of the maximum can be easily tuned to an excitation wavelength by choice of the SL composition. Further improvement of the emitter parameters can be expected with additional optimization of the SL structure parameters.

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