scholarly journals Monte Carlo simulation of scattered circularly polarized light in biological tissues for detection technique of abnormal tissues using spin-polarized light emitting diodes

2020 ◽  
Vol 59 (SE) ◽  
pp. SEEG03 ◽  
Author(s):  
Nozomi Nishizawa ◽  
Atsushi Hamada ◽  
Kazumasa Takahashi ◽  
Takahiro Kuchimaru ◽  
Hiro Munekata
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Light Emitting Diodes ◽  
Polarized Light ◽  
Biological Tissues ◽  
Detection Technique ◽  
Circularly Polarized Light ◽  
Light Emitting ◽  
Circularly Polarized ◽  
Spin Polarized

scholarly journals Arbitrary helicity control of circularly polarized light from lateral-type spin-polarized light-emitting diodes at room temperature

2018 ◽  
Vol 11 (5) ◽  
pp. 053003 ◽  
Author(s):  
Nozomi Nishizawa ◽  
Masaki Aoyama ◽  
Ronel C. Roca ◽  
Kazuhiro Nishibayashi ◽  
Hiro Munekata
Keyword(s):  
Room Temperature ◽  
Light Emitting Diodes ◽  
Polarized Light ◽  
Circularly Polarized Light ◽  
Light Emitting ◽  
Circularly Polarized ◽  
Spin Polarized

Chiral-induced spin selectivity enables a room-temperature spin light-emitting diode

Science ◽  
2021 ◽  
Vol 371 (6534) ◽  
pp. 1129-1133
Author(s):  
Young-Hoon Kim ◽  
Yaxin Zhai ◽  
Haipeng Lu ◽  
Xin Pan ◽  
Chuanxiao Xiao ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Room Temperature ◽  
Light Emitting Diode ◽  
Polarized Light ◽  
Chiral Molecules ◽  
Circularly Polarized Light ◽  
Light Emitting ◽  
Circularly Polarized ◽  
Spin Polarized ◽  
Spin Led

In traditional optoelectronic approaches, control over spin, charge, and light requires the use of both electrical and magnetic fields. In a spin-polarized light-emitting diode (spin-LED), charges are injected, and circularly polarized light is emitted from spin-polarized carrier pairs. Typically, the injection of carriers occurs with the application of an electric field, whereas spin polarization can be achieved using an applied magnetic field or polarized ferromagnetic contacts. We used chiral-induced spin selectivity (CISS) to produce spin-polarized carriers and demonstrate a spin-LED that operates at room temperature without magnetic fields or ferromagnetic contacts. The CISS layer consists of oriented, self-assembled small chiral molecules within a layered organic-inorganic metal-halide hybrid semiconductor framework. The spin-LED achieves ±2.6% circularly polarized electroluminescence at room temperature.

scholarly journals Co-planar spin-polarized light-emitting diodes

2006 ◽  
Vol 88 (9) ◽  
pp. 091106 ◽  
Author(s):  
B. Kaestner ◽  
J. Wunderlich ◽  
J. Sinova ◽  
T. Jungwirth
Keyword(s):  
Light Emitting Diodes ◽  
Polarized Light ◽  
Light Emitting ◽  
Spin Polarized

scholarly journals Matrix approach for modeling of emission from multilayer spin-polarized light-emitting diodes and lasers

2014 ◽  
Vol 16 (6) ◽  
pp. 065008 ◽  
Author(s):  
Tibor Fördös ◽  
Kamil Postava ◽  
Henri Jaffrès ◽  
Jaromír Pištora
Keyword(s):  
Light Emitting Diodes ◽  
Polarized Light ◽  
Matrix Approach ◽  
Light Emitting ◽  
Spin Polarized

Linear and Circular Dichroism in Angle Resolved Fe 3p Photoemission

1994 ◽  
Vol 375 ◽  
Author(s):  
E. Tamura ◽  
G. D. Waddill ◽  
J. G. Tobin ◽  
P. A. Sterne
Keyword(s):  
Polarized Light ◽  
Exchange Splitting ◽  
Orbit Splitting ◽  
Green Function Method ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
X Ray ◽  
Spin Orbit Splitting ◽  
Magnetic Dichroism ◽  
Spin Polarized

AbstractUsing a recently developed spin-polarized, fully relativistic, multiple scattering approach based on the layer KKR Green function method, we have reproduced the Fe 3p angle-resolved soft x-ray photoemission spectra and analyzed the associated large magnetic dichroism effects for excitation with both linearly and circularly polarized light. Comparison between theory and experiment yields a spin-orbit splitting of 1.0 – 1.2 eV and an exchange splitting of 0.9 – 1.0 eV for Fe 3p. These values are 50 – 100 % larger than those hitherto obtained experimentally.

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.

Quantifying electrical spin injection: Component-resolved electroluminescence from spin-polarized light-emitting diodes

2001 ◽  
Vol 79 (19) ◽  
pp. 3098-3100 ◽  
Author(s):  
B. T. Jonker ◽  
A. T. Hanbicki ◽  
Y. D. Park ◽  
G. Itskos ◽  
M. Furis ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Spin Injection ◽  
Polarized Light ◽  
Light Emitting ◽  
Spin Polarized ◽  
Electrical Spin
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