scholarly journals Transconductance and effective Landé factors for quantum point contacts: Spin-orbit coupling and interaction effects

2016 ◽  
Vol 93 (3) ◽  
Author(s):  
K. Kolasiński ◽  
A. Mreńca-Kolasińska ◽  
B. Szafran
Keyword(s):  
Interaction Effects ◽  
Orbit Coupling ◽  
Quantum Point Contacts ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Point Contacts ◽  
Quantum Point ◽  
Landé Factors

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

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.

scholarly journals Strong interaction effects in Σ- atoms

2020 ◽  
Vol 4 ◽  
pp. 59
Author(s):  
Th. Petridou
Keyword(s):  
Strong Interaction ◽  
Nuclear Spin ◽  
Interaction Effects ◽  
Atomic Energy ◽  
Orbit Coupling ◽  
Simplified Model ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Matrix Approach ◽  
S Matrix

An approximation is made for the Σ- atomic energy shifts and widths due to strong interaction central and spin-orbit parts of the potential with the use of the S-Matrix Approach, introduced by DelofF. This simplified model is applied in 12C_Σ in connection with the Σ-hypernuclear data: 12C_Σ. It is concluded that there is an essential influence of the strong interaction and especially of the nuclear spin-orbit coupling in the spectra of Σ-12C, mainly for the p-shell.

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