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Title
Japanese: 
English:Low-threshold pure-circular polarization electro-luminescence from spin-light-emitting diodes consisting of oxidized Al/AlAs tunnel barriers 
Author
Japanese: 宗片比呂夫.  
English: Hiro MUNEKATA.  
Language English 
Journal/Book name
Japanese: 
English:Proceeding SPIE 11288 
Volume, Number, Page Vol. 11288       
Published date Mar. 22, 2020 
Publisher
Japanese: 
English:SPIE 
Conference name
Japanese: 
English:SPIE OPTO, 2020 in Photonic West 2020 
Conference site
Japanese: 
English:San Francisco, California, United States 
DOI https://doi.org/10.1117/12.2545701
Abstract We report lateral-type, GaAs/AlGaAs double hetero-structure (DH) spin-LEDs with stripe Fe spin injectors that exhibit nearly pure circular polarization (CP) electroluminescence (EL) with current densities of J  10 A/cm2 or less. Experiments with such spin-LEDs have made it possible to obtain experimental data that were not accessible in the first report [1,2]: namely, clear experimental proof for the presence of a threshold J value at which the annihilation of minority-helicity CPEL　component takes place.

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