Spin-Polarized Light-Emitting Diodes with Mn-Doped InAs Quantum Dot Nanomagnets as a Spin Aligner

Nano Letters ◽  
2005 ◽  
Vol 5 (2) ◽  
pp. 209-212 ◽  
Author(s):  
Subhananda Chakrabarti ◽  
Michael A. Holub ◽  
Pallab Bhattacharya ◽  
Tetsuya D. Mishima ◽  
Michael B. Santos ◽  
...  
2008 ◽  
Vol 92 (25) ◽  
pp. 259903
Author(s):  
A. Baumgartner ◽  
A. Chaggar ◽  
A. Patanè ◽  
L. Eaves ◽  
M. Henini

2006 ◽  
Vol 88 (9) ◽  
pp. 091106 ◽  
Author(s):  
B. Kaestner ◽  
J. Wunderlich ◽  
J. Sinova ◽  
T. Jungwirth

2014 ◽  
Vol 16 (6) ◽  
pp. 065008 ◽  
Author(s):  
Tibor Fördös ◽  
Kamil Postava ◽  
Henri Jaffrès ◽  
Jaromír Pištora

2017 ◽  
Vol 114 (8) ◽  
pp. 1783-1788 ◽  
Author(s):  
Nozomi Nishizawa ◽  
Kazuhiro Nishibayashi ◽  
Hiro Munekata

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.


2008 ◽  
Vol 93 (9) ◽  
pp. 091101 ◽  
Author(s):  
P. J. Carrington ◽  
V. A. Solov'ev ◽  
Q. Zhuang ◽  
A. Krier ◽  
S. V. Ivanov

2001 ◽  
Vol 79 (19) ◽  
pp. 3098-3100 ◽  
Author(s):  
B. T. Jonker ◽  
A. T. Hanbicki ◽  
Y. D. Park ◽  
G. Itskos ◽  
M. Furis ◽  
...  

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Kohei Etou ◽  
Satoshi Hiura ◽  
Soyoung Park ◽  
Kazuya Sakamoto ◽  
Junichi Takayama ◽  
...  

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