Spin-Orbit Coupling-Induced Electron Spin Polarization Observed in Photosensitized Electron Transfer Reactions between Xanthene Dyes and p-Quinones

1994 ◽  
Vol 116 (26) ◽  
pp. 12065-12066 ◽  
Author(s):  
Akio Katsuki ◽  
Kimio Akiyama ◽  
Yusaku Ikegami ◽  
Shozo Tero-Kubota
Keyword(s):  
Electron Transfer ◽  
Spin Polarization ◽  
Electron Spin ◽  
Orbit Coupling ◽  
Transfer Reactions ◽  
Electron Spin Polarization ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Xanthene Dyes ◽  
Electron Transfer Reactions

Spin−Orbit Coupling Induced Electron Spin Polarization:  Influence of Heavy Atom Position

1997 ◽  
Vol 119 (6) ◽  
pp. 1323-1327 ◽  
Author(s):  
Shinya Sasaki ◽  
Akio Katsuki ◽  
Kimio Akiyama ◽  
Shozo Tero-Kubota
Keyword(s):  
Spin Polarization ◽  
Electron Spin ◽  
Heavy Atom ◽  
Orbit Coupling ◽  
Electron Spin Polarization ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Atom Position

Chemically induced electron spin polarization in electron-transfer reactions

1974 ◽  
Vol 27 (3) ◽  
pp. 769-777 ◽  
Author(s):  
P.W. Atkins ◽  
A.J. Dobbs ◽  
G.T. Evans ◽  
K.A. McLauchlan ◽  
P.W. Percival
Keyword(s):  
Electron Transfer ◽  
Spin Polarization ◽  
Electron Spin ◽  
Transfer Reactions ◽  
Electron Spin Polarization ◽  
Electron Transfer Reactions ◽  
Chemically Induced

scholarly journals Chiral-Induced Spin Selectivity: A Symmetry Analysis of Electronic Transmission

2019 ◽  
Author(s):  
Martin Sebastian Zöllner ◽  
Solmar Varela ◽  
Ernesto Medina ◽  
Vladimiro Mujica ◽  
Carmen Herrmann
Keyword(s):  
Electron Transfer ◽  
Long Range ◽  
Spin Polarization ◽  
Symmetry Analysis ◽  
Orbit Coupling ◽  
Necessary Condition ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Helical Structures ◽  
Theoretical Understanding

The chiral-induced spin selectivity (CISS) effect, which describes the spin-filtering ability of diamagnetic structures like DNA or peptides having chiral symmetry, has emerged in the past years as the central mechanism behind a number of important phenomena, like long-range biological electron transfer, enantiospecific electrocatalysis, and molecular recognition. Also, CISS-induced spin polarization has a considerable promise for new spintronic devices and the design of quantum materials. The CISS effect is attributed to spin–orbit coupling, but a sound theoretical understanding of the surprising magnitude of this effect in molecules without heavy atoms is currently lacking. We are taking an essential step into this direction by analyzing the importance of imaginary terms in the Hamiltonian as a necessary condition for non-vanishing spin polarization in helical structures. Based on first-principles calculations and analytical considerations, we perform a symmetry analysis of the key quantities determining transport probabilities of electrons of different spin orientations. These imaginary terms originate from the spin–orbit coupling, and they preserve the Hermitian nature of the Hamiltonian. Hence, they are not related to the breaking of time-reversal symmetry resulting from the fact that molecules are open systems in a junction. Our symmetry analysis helps to identify essential constraints in the theoretical description of the CISS effect. We further draw an analogy with the appearance of imaginary terms in simple models of barrier scattering, which may help understanding the unusually effective long-range electron transfer in biological systems.<br>

Sign in / Sign up

Export Citation Format

Share Document