Effect of cubic Dresselhaus interaction on the longitudinal optical conductivity of a spin-orbit coupled system

2018 ◽  
Vol 123 (11) ◽  
pp. 113902 ◽  
Author(s):  
Elmer Cruz ◽  
Catalina López-Bastidas ◽  
Jesús A. Maytorena
Keyword(s):  
Optical Conductivity ◽  
Coupled System ◽  
Longitudinal Optical ◽  
Spin Orbit

scholarly journals Low-Energy Optical Conductivity of TaP: Comparison of Theory and Experiment

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 567
Author(s):  
Alexander Yaresko ◽  
Artem V. Pronin
Keyword(s):  
Experimental Data ◽  
Optical Conductivity ◽  
Low Energy ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Natural Explanation ◽  
Weyl Semimetal ◽  
Unintentional Doping ◽  
Mott Formula ◽  
Theory And Experiment

The ab-plane optical conductivity of the Weyl semimetal TaP is calculated from the band structure and compared to the experimental data. The overall agreement between theory and experiment is found to be best when the Fermi level is slightly (20 to 60 meV) shifted upwards in the calculations. This confirms a small unintentional doping of TaP, reported earlier, and allows a natural explanation of the strong low-energy (50 meV) peak seen in the experimental ab-plane optical conductivity: this peak originates from transitions between the almost parallel non-degenerate electronic bands split by spin-orbit coupling. The temperature evolution of the peak can be reasonably well reproduce by calculations using an analog of the Mott formula.

scholarly journals Substrate-tuning of correlated spin-orbit oxides revealed by optical conductivity calculations

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Bongjae Kim ◽  
Beom Hyun Kim ◽  
Kyoo Kim ◽  
B. I. Min
Keyword(s):  
Optical Conductivity ◽  
Spin Orbit

scholarly journals Exact SU(2) Symmetry and Persistent Spin Helix in a Spin-Orbit Coupled System

2006 ◽  
Vol 97 (23) ◽  
Author(s):  
B. Andrei Bernevig ◽  
J. Orenstein ◽  
Shou-Cheng Zhang
Keyword(s):  
Coupled System ◽  
Spin Orbit

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.

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