scholarly journals Spin-orbit coupling as a source of long-range triplet proximity effect in superconductor-ferromagnet hybrid structures

2014 ◽  
Vol 89 (13) ◽  
Author(s):  
F. S. Bergeret ◽  
I. V. Tokatly
Keyword(s):  
Long Range ◽  
Proximity Effect ◽  
Orbit Coupling ◽  
Hybrid Structures ◽  
Spin Orbit Coupling ◽  
Spin Orbit

scholarly journals Boosting proximity spin–orbit coupling in graphene/WSe2 heterostructures via hydrostatic pressure

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Bálint Fülöp ◽  
Albin Márffy ◽  
Simon Zihlmann ◽  
Martin Gmitra ◽  
Endre Tóvári ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Proximity Effect ◽  
Weak Localization ◽  
Interlayer Coupling ◽  
Proximity Effects ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Weak Antilocalization ◽  
Atomic Orbitals

AbstractVan der Waals heterostructures composed of multiple few layer crystals allow the engineering of novel materials with predefined properties. As an example, coupling graphene weakly to materials with large spin–orbit coupling (SOC) allows to engineer a sizeable SOC in graphene via proximity effects. The strength of the proximity effect depends on the overlap of the atomic orbitals, therefore, changing the interlayer distance via hydrostatic pressure can be utilized to enhance the interlayer coupling between the layers. In this work, we report measurements on a graphene/WSe2 heterostructure exposed to increasing hydrostatic pressure. A clear transition from weak localization to weak antilocalization is visible as the pressure increases, demonstrating the increase of induced SOC in graphene.

scholarly journals Role of Spin–Orbit Coupling in Long Range Energy Transfer in Metal–Organic Frameworks

2020 ◽  
Vol 142 (48) ◽  
pp. 20434-20443
Author(s):  
Arnab Chakraborty ◽  
Stefan Ilic ◽  
Meng Cai ◽  
Bradley J. Gibbons ◽  
Xiaozhou Yang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Long Range ◽  
Metal Organic Frameworks ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Metal Organic

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>

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>

Manipulating effective spin orbit coupling based on proximity effect in magnetic bilayers

2015 ◽  
Vol 107 (8) ◽  
pp. 082404 ◽  
Author(s):  
Y. Q. Zhang ◽  
N. Y. Sun ◽  
W. R. Che ◽  
X. L. Li ◽  
J. W. Zhang ◽  
...  
Keyword(s):  
Proximity Effect ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Effective Spin
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