Terahertz radiation-induced conductivity, Kerr and Faraday angles, and spin textures in a two-dimensional electron gas with spin-orbit coupling subjected to a high magnetic field and periodic potential

Abstract

The terahertz radiation-induced conductivity and dielectric polarization tensors as well as the Faraday and Kerr rotation angles and the non-equilibrium spin textures are studied for two-dimensional electron gas with strong spin-orbit coupling subjected to high magnetic field and to tunable periodic potential of a two-dimensional gated superlattice. It is found that both real and imaginary parts of the frequency-dependent induced conductivity approach maximum values with sharp and detectable peaks at frequencies corresponding to the inter-subband transitions between spin-split magnetic subbands. The observed properties of the conductivity tensor frequency dependence are applied for the description of the Kerr and Faraday rotation angles which can be used as another experimental tool for describing the electron gas in periodic structures with significant spin-orbit coupling. The formation of radiation-induced spin textures is predicted having both in-plane and out-of-plane components with space distribution scale comparable to the superlattice cell size which can be observed experimentally.

9 pages, 6 figures

References in corpus (20)

• Spintronics: Fundamentals and applications
• Spin dynamics in semiconductors
• Current induced electron spin polarization in strained semiconductors
• Pure spin current from one-photon absorption of linearly polarized light in noncentrosymmetric semiconductors
• Spin current injection by intersubband transitions in quantum wells
• Determination of the infrared complex magneto-conductivity tensor in itinerant ferromagnets from Faraday and Kerr measurements
• Magneto-optical properties of (Ga,Mn)As: an ab--initio determination
• Generation of spin currents via Raman scattering
• Electric field-induced spin textures in a superlattice with Rashba and Dresselhaus spin-orbit coupling
• Optical orientation of electron spins by linearly polarized light
• Magneto-gyrotropic photogalvanic effect and spin dephasing in (110)-grown GaAs/AlGaAs quantum well structures
• Spin orientation of a two-dimensional electron gas by a high-frequency electric field
• Spin-orbit lateral superlattices: energy bands and spin polarization in 2DEG
• Manipulating the spin texture in spin-orbit superlattice by terahertz radiation
• Kinetics of spin coherence of electrons in $n$-type InAs quantum wells under intense terahertz laser fields
• Harper-Hofstadter problem for 2D electron gas with $\mathbf{k}$-linear Rashba spin-orbit coupling
• Hall Conductance of a Two-Dimensional Electron Gas with Spin-Orbit Coupling at the Presence of Lateral Periodic Potential
• Electrical Control of Dynamic Spin Splitting Induced by Exchange Interaction as Revealed by Time Resolved Kerr Rotation in a Degenerate Spin-Polarized Electron Gas
• Scattering on the lateral one-dimensional superlattice with spin-orbit coupling
• Spin-density induced by electromagnetic wave in two-dimensional electron gas with both Rashba and Dresselhaus spin-orbit couplings

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