scholarly journals Chiral Bloch states in single-layer graphene with Rashba spin-orbit coupling: Equilibrium spin current

2021 ◽  
Vol 104 (7) ◽  
Author(s):  
Y. Avishai ◽  
Y. B. Band
Keyword(s):  
Spin Current ◽  
Single Layer ◽  
Orbit Coupling ◽  
Single Layer Graphene ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Layer Graphene ◽  
Rashba Spin

scholarly journals Coherent quantum transport through ferromagnetic graphene structures: Effects of Rashba spin–orbit coupling

2020 ◽  
Vol 2020 (7) ◽  
Author(s):  
Kobra Hasanirokh ◽  
Fezzeh Naderi
Keyword(s):  
Transport Properties ◽  
Quantum Transport ◽  
Structural Parameters ◽  
Single Layer ◽  
Orbit Coupling ◽  
Single Layer Graphene ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Layer Graphene ◽  
Rashba Spin

Abstract In a system consisting of a monolayer ferromagnetic graphene structure, based on the scattering matrix approach, we study the spin-dependent transmission coefficients, group delay time, magnetoresistance and giant magnetoresistance of spin-polarized electron tunneling through the Rashba barrier in single-layer graphene. The results show that Rashba spin–orbit coupling can cause a natural spin filter mechanism; it thus has a significant role in controlling the transmission probabilities. In addition, the quantum transport properties of our system depend critically on the structural parameters. The incidence angle, energy, barrier number, and exchange energies can strongly control the transport properties of multi-layer graphene. It is predicted that controlling spin-dependent transport in single layer graphene results can develop the well-known spintronics.

Femtosecond Laser Induced Spin Dynamics in Single Layer Graphene/CoFeB Thin Films

Nanoscale ◽  
2021 ◽  
Author(s):  
Surya Narayan Panda ◽  
Sudip Majumder ◽  
Samiran Choudhury ◽  
Arpan Bhattacharyya ◽  
Sumona Sinha ◽  
...  
Keyword(s):  
Thin Films ◽  
Spin Dynamics ◽  
Spin Current ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Layer Graphene ◽  
Important Building Block ◽  
Unique Ability

Graphene/Ferromagnet hybrid heterostructure is an important building block of spintronics due to unique ability of graphene to transport spin current over unprecedented distance and possible increase in its spin-orbit coupling...

Persistent Spin Current in a Quantum Wire with Weak Rashba Spin–Orbit Coupling

2006 ◽  
Vol 23 (11) ◽  
pp. 3065-3068 ◽  
Author(s):  
Wang Yi ◽  
Sheng Wei ◽  
Zhou Guang-Hui
Keyword(s):  
Quantum Wire ◽  
Spin Current ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Rashba Spin

SPIN CURRENT INDUCED ELECTRIC FIELD IN A RASHBA QUANTUM WIRE

2010 ◽  
Vol 24 (07) ◽  
pp. 649-656
Author(s):  
XI FU ◽  
GUANGHUI ZHOU
Keyword(s):  
Electric Field ◽  
Current Density ◽  
Quantum Wire ◽  
Spin Current ◽  
Scattering Matrix ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Rashba Spin

We investigate theoretically the spin current and spin current induced electric field in a weak Rashba spin-orbit coupling quantum wire (QW) using a definition for spin current by means of scattering matrix. It is found that there exists two non-zero linear spin current density elements which have oscillation peaks at the center of QW and their strengths can be changed by the number of propagation modes and Rashba constant, respectively. Moreover, the spin current induced electric field has also been calculated and its strength is measurable with present technology with which can be used to detect spin current.

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