scholarly journals Influence of impurity scattering on the conductance anomalies of quantum point contacts with lateral spin-orbit coupling

2011 ◽  
Author(s):  
J. Wan ◽  
M. Cahay ◽  
P. P. Das ◽  
R. S. Newrock
Keyword(s):  
Impurity Scattering ◽  
Orbit Coupling ◽  
Quantum Point Contacts ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Point Contacts ◽  
Quantum Point

scholarly journals Steps toward an all-electric spin valve using side-gated quantum point contacts with lateral spin–orbit coupling

2013 ◽  
Vol 4 (1) ◽  
pp. 013002 ◽  
Author(s):  
Nikhil Bhandari ◽  
Maitreya Dutta ◽  
James Charles ◽  
Richard S Newrock ◽  
Marc Cahay ◽  
...  
Keyword(s):  
Spin Valve ◽  
Orbit Coupling ◽  
Quantum Point Contacts ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Point Contacts ◽  
Quantum Point

DYNAMIC MAGNETOELECTRIC AND CHARGE-HALL EFFECTS IN THE RASHBA–DRESSELHAUS MODEL

2006 ◽  
Vol 20 (29) ◽  
pp. 4937-4946 ◽  
Author(s):  
V. V. BRYKSIN ◽  
P. KLEINERT
Keyword(s):  
Kinetic Equations ◽  
Impurity Scattering ◽  
Coupled System ◽  
Orbit Coupling ◽  
Spin Density Matrix ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Hall Effects ◽  
Dimensional Electron Gas ◽  
Dynamical Charge

In a biased two-dimensional electron gas, the presence of spin-orbit coupling of both the Rashba and Dresselhaus type leads to a Hall conductivity of charge carriers in the absence of an external magnetic field. We study the dynamical charge-Hall effect, the field-induced spin accumulation, and the magnetoelectric effect for a system with short-range elastic impurity scattering by analytically solving the kinetic equations for the spin-density matrix in the linear response regime. By tuning the strength of the Rashba and Dresselhaus spin-orbit coupling as well as the frequency and direction of the applied electric field, eigenmodes of the spin-coupled system are identified.

scholarly journals Effective Landé factors for an electrostatically defined quantum point contact in silicene

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bartłomiej Rzeszotarski ◽  
Alina Mreńca-Kolasińska ◽  
François M. Peeters ◽  
Bartłomiej Szafran
Keyword(s):  
Magnetic Field ◽  
Point Contact ◽  
Zeeman Splitting ◽  
Orbit Coupling ◽  
Quantum Point Contact ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Quantum Point ◽  
Landé Factors ◽  
Strong Spin

AbstractThe transconductance and effective Landé $$g^*$$ g ∗ factors for a quantum point contact defined in silicene by the electric field of a split gate is investigated. The strong spin–orbit coupling in buckled silicene reduces the $$g^*$$ g ∗ factor for in-plane magnetic field from the nominal value 2 to around 1.2 for the first- to 0.45 for the third conduction subband. However, for perpendicular magnetic field we observe an enhancement of $$g^*$$ g ∗ factors for the first subband to 5.8 in nanoribbon with zigzag and to 2.5 with armchair edge. The main contribution to the Zeeman splitting comes from the intrinsic spin–orbit coupling defined by the Kane–Mele form of interaction.

Spin injection using quantum point contacts with spin-orbit interaction and its detection

2006 ◽  
Vol 3 (12) ◽  
pp. 4168-4171 ◽  
Author(s):  
Mikio Eto ◽  
Tetsuya Hayashi ◽  
Yuji Kurotani ◽  
Hiroto Yokouchi
Keyword(s):  
Spin Injection ◽  
Orbit Interaction ◽  
Quantum Point Contacts ◽  
Spin Orbit ◽  
Point Contacts ◽  
Spin Orbit Interaction ◽  
Quantum Point
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