The role of Rashba spin-orbit coupling in valley-dependent transport of Dirac fermions

2017 ◽  
Vol 504 ◽  
pp. 52-57 ◽  
Author(s):  
Kobra Hasanirok ◽  
Hakimeh Mohammadpour
Keyword(s):  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Dirac Fermions ◽  
Spin Orbit ◽  
Rashba Spin ◽  
Dependent Transport

scholarly journals Effect of the strain on spin-valley transport properties in MoS2 superlattice

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Farhad Sattari ◽  
Soghra Mirershadi
Keyword(s):  
Transport Properties ◽  
Barrier Height ◽  
Degrees Of Freedom ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Rashba Spin ◽  
Valley Polarization ◽  
Dependent Transport ◽  
Spin Inversion

AbstractThe effect of the strain on the spin and valley dependent transport properties, including the conductance and polarization, through a monolayer MoS2 superlattice under Rashba spin–orbit coupling is theoretically investigated. It is found that the conductance strongly depends on the spin and valley degrees of freedom, and spin-inversion can be achieved by MoS2 superlattice. Also, the spin and valley dependent conductance in a monolayer MoS2 superlattice can be efficiently adjusted via strain and the number of the superlattice barriers. Moreover, it is demonstrated that both the magnitude and sign of the spin and valley polarization depend on the strain strength, the number of barriers, and electrostatic barrier height. Both full spin and valley polarized current (with 100% or − 100% efficiency) can be realized in a MoS2 superlattice under strain.

Anomalous Hall and Nernst Effects in 2D Systems: Role of Cubic Rashba Spin-Orbit Coupling

2018 ◽  
Vol 12 (10) ◽  
pp. 1800232 ◽  
Author(s):  
Anna Krzyżewska ◽  
Anna Dyrdał ◽  
Józef Barnaś ◽  
Jamal Berakdar
Keyword(s):  
Orbit Coupling ◽  
2D Systems ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Rashba Spin

scholarly journals Dzyaloshinskii–Moriya interaction in noncentrosymmetric superlattices

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Woo Seung Ham ◽  
Abdul-Muizz Pradipto ◽  
Kay Yakushiji ◽  
Kwangsu Kim ◽  
Sonny H. Rhim ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Degrees Of Freedom ◽  
Orbit Coupling ◽  
Inversion Symmetry ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Band Formation ◽  
Research Activities ◽  
Moriya Interaction

AbstractDzyaloshinskii–Moriya interaction (DMI) is considered as one of the most important energies for specific chiral textures such as magnetic skyrmions. The keys of generating DMI are the absence of structural inversion symmetry and exchange energy with spin–orbit coupling. Therefore, a vast majority of research activities about DMI are mainly limited to heavy metal/ferromagnet bilayer systems, only focusing on their interfaces. Here, we report an asymmetric band formation in a superlattices (SL) which arises from inversion symmetry breaking in stacking order of atomic layers, implying the role of bulk-like contribution. Such bulk DMI is more than 300% larger than simple sum of interfacial contribution. Moreover, the asymmetric band is largely affected by strong spin–orbit coupling, showing crucial role of a heavy metal even in the non-interfacial origin of DMI. Our work provides more degrees of freedom to design chiral magnets for spintronics applications.

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