Spin Dynamics and Spin Transport

Abstract

Spin-orbit (SO) interaction critically influences electron spin dynamics and spin transport in bulk semiconductors and semiconductor microstructures. This interaction couples electron spin to dc and ac electric fields. Spin coupling to ac electric fields allows efficient spin manipulating by the electric component of electromagnetic field through the electric dipole spin resonance (EDSR) mechanism. Usually, it is much more efficient than the magnetic manipulation due to a larger coupling constant and the easier access to spins at a nanometer scale. The dependence of the EDSR intensity on the magnetic field direction allows measuring the relative strengths of the competing SO coupling mechanisms in quantum wells. Spin coupling to an in-plane electric field is much stronger than to a perpendicular field. Because electron bands in microstructures are spin split by SO interaction, electron spin is not conserved and spin transport in them is controlled by a number of competing parameters, hence, it is rather nontrivial. The relation between spin transport, spin currents, and spin populations is critically discussed. Importance of transients and sharp gradients for generating spin magnetization by electric fields and for ballistic spin transport is clarified.

Invited talk at the 3rd Intern. Conf. on Physics and Applications of Spin-Related Phenomena in Semiconductors, Santa Barbara (CA), July 21 - 23. To be published in the Journal of Superconductivity. 7 pages, 2 figures

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Cited by in corpus (37)

• Spin dynamics in semiconductors
• Electric Dipole Induced Spin Resonance in Quantum Dots
• Spin currents and spin superfluidity
• Imaging mesoscopic spin Hall flow: Spatial distribution of local spin currents and spin densities in and out of multiterminal spin-orbit coupled semiconductor nanostructures
• Intrinsic Spin Hall Edges
• Spin-orbit coupling and spin transport
• Theory of electric dipole spin resonance in quantum dots: Mean field theory with Gaussian fluctuations and beyond
• Equilibrium spin currents and magnetoelectric effect in magnetic nanostructures
• Equilibrium spin currents in the Rashba medium
• Theory of spin current in chiral helimagnet
• Mechanical measurement of equilibrium spin currents in the Rashba medium
• Spin susceptibility of interacting two-dimensional electrons in the presence of spin-orbit coupling
• Effect of gate-driven spin resonance on the conductance of a one-dimensional quantum wire
• Transport magnetic currents driven by moving kink crystal in chiral helimagnets
• Spin Hall effect in two-dimensional $p$-type semiconductors in a magnetic field
• Zeeman ratchets: pure spin current generation in mesoscopic conductors with non-uniform magnetic fields
• Theory of a chiral Fermi liquid: general formalism
• Spin and charge optical conductivities in spin-orbit coupled systems
• Quantum nanostructures in strongly spin-orbit coupled two-dimensional systems
• Nuclear Dynamics During Landau-Zener Singlet-Triplet Transitions in Double Quantum Dots
• Spin currents, spin torques, and the concept of spin superfluidity
• Mechanism of half-frequency electric dipole spin resonance in double quantum dots: Effect of nonlinear charge dynamics inside the singlet manifold
• Manipulation of the Land$\acute{\text{e}}$ g-factor in InAs quantum dots through the application of anisotropic gate potentials: Exact diagonalization, numerical and perturbation methods
• Symmetry constraints on the orbital transport in solids
• Bulk electron spin polarization generated by the spin Hall current
• Interplay of the Rashba and Dresselhaus spin-orbit coupling in the optical spin susceptibility of 2D electron systems
• Kinetics of spin coherence of electrons in $n$-type InAs quantum wells under intense terahertz laser fields
• Spin-density induced by electromagnetic wave in two-dimensional electron gas
• Spin-Orbit Qubit on a Multiferroic Insulator in a Superconducting Resonator
• Hidden Galilean symmetry, conservation laws and emergence of spin current in the soliton sector of chiral helimagnet
• Theory of Spin Hall Effects in Semiconductors
• Magnetoelectric torque and edge currents caused by spin-orbit coupling
• Frequency- and transverse wave-vector-dependent spin Hall conductivity in two-dimensional electron gas with disorder
• Semiconductor Spintronics: Progress and Challenges
• Synthetic spin-orbit coupling mediated by a bosonic environment
• Vacuum fluctuations and the spin current in mesoscopic structures with collinear magnetic order
• Dynamical spin properties of confined Fermi and Bose systems in presence of spin-orbit coupling