Low-threshold pure-circular polarization electro-luminescence from spin-light-emitting diodes consisting of oxidized Al/AlAs tunneling barriers

2020 ◽  
Author(s):  
Hiro Munekata
Keyword(s):  
Circular Polarization ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Low Threshold ◽  
Electro Luminescence

The circular polarization inversion in δ⟨Mn⟩/InGaAs/GaAs light-emitting diodes

2015 ◽  
Vol 107 (4) ◽  
pp. 042406 ◽  
Author(s):  
M. V. Dorokhin ◽  
Yu. A. Danilov ◽  
B. N. Zvonkov ◽  
M. A. Gonzalez Balanta ◽  
M. J. S. P. Brasil ◽  
...  
Keyword(s):  
Circular Polarization ◽  
Light Emitting Diodes ◽  
Light Emitting

Regulating the circular polarization in nitride-based light-emitting diodes through the spin injection

2019 ◽  
Vol 12 (12) ◽  
pp. 123005 ◽  
Author(s):  
Yaping Wu ◽  
Jiajun Chen ◽  
Jiangpeng Zhou ◽  
Jinshen Lan ◽  
Hao Zeng ◽  
...  
Keyword(s):  
Circular Polarization ◽  
Light Emitting Diodes ◽  
Spin Injection ◽  
Light Emitting

Control of circular polarization of electroluminescence in spin light-emitting diodes based on InGaAs/GaAs/δ〈Mn〉 heterostructures

2017 ◽  
Vol 59 (11) ◽  
pp. 2162-2167 ◽  
Author(s):  
E. I. Malysheva ◽  
M. V. Dorokhin ◽  
P. B. Demina ◽  
A. V. Zdoroveyshchev ◽  
A. V. Rykov ◽  
...  
Keyword(s):  
Circular Polarization ◽  
Light Emitting Diodes ◽  
Light Emitting

scholarly journals Pure circular polarization electroluminescence at room temperature with spin-polarized light-emitting diodes

2017 ◽  
Vol 114 (8) ◽  
pp. 1783-1788 ◽  
Author(s):  
Nozomi Nishizawa ◽  
Kazuhiro Nishibayashi ◽  
Hiro Munekata
Keyword(s):  
Circular Polarization ◽  
Room Temperature ◽  
Light Emitting Diodes ◽  
Polarized Light ◽  
Tunnel Barrier ◽  
Light Emitting ◽  
Left Handed ◽  
Spin Polarized ◽  
Side Walls ◽  
Device Operation

We report the room-temperature electroluminescence (EL) with nearly pure circular polarization (CP) from GaAs-based spin-polarized light-emitting diodes (spin-LEDs). External magnetic fields are not used during device operation. There are two small schemes in the tested spin-LEDs: first, the stripe-laser-like structure that helps intensify the EL light at the cleaved side walls below the spin injector Fe slab, and second, the crystalline AlOxspin-tunnel barrier that ensures electrically stable device operation. The purity of CP is depressively low in the low current density (J) region, whereas it increases steeply and reaches close to the pure CP whenJ> 100 A/cm2. There, either right- or left-handed CP component is significantly suppressed depending on the direction of magnetization of the spin injector. Spin-dependent reabsorption, spin-induced birefringence, and optical spin-axis conversion are suggested to account for the observed experimental results.

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