Spin responses and effective Hamiltonian for the two dimensional electron gas at oxide interface {LaAlO}${}_3$/{SrTiO}${}_3$

Abstract

Strong Rashba spin-orbit coupling (SOC) of the two-dimensional electron gas (2DEG) at the oxide interface $\mathrm{LaAl}{\mathrm{O}}_3/SrTi{\mathrm{O}}_3$ underlies a variety of exotic physics, but its nature is still under debate. We derive an effective Hamiltonian for the 2DEG at the oxide interface $\mathrm{LaAl}{\mathrm{O}}_3/SrTi{\mathrm{O}}_3$ and find a different anisotropic Rashba SOC for the $d_{xz}$ and $d_{yz}$ orbitals. This anisotropic Rashba SOC leads to anisotropic static spin susceptibilities and also distinctive behavior of the spin Hall conductivity. These unique spin responses may be used to determine the nature of the Rashba SOC experimentally and shed light on the orbital origin of the 2DEG.

arXiv comment10 pages, 2 figures, final published version

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Cited by in corpus (32)

• RKKY interaction in three-dimensional electron gases with linear spin-orbit coupling
• Theory of the spin galvanic effect at oxide interfaces
• Absence of Giant Spin Splitting in the Two-Dimensional Electron Liquid at the Surface of SrTiO${}_3$ (001)
• Strong anisotropic optical conductivity in two dimensional puckered structures: The role of Rashba effect
• Multi-band theory of superconductivity at the LaAlO${}_3$/SrTiO${}_3$ interface
• Unconventional Bloch-Grüneisen scattering in hybrid Bose-Fermi systems
• Intrinsic spin Hall effect in systems with striped spin-orbit coupling
• Semiclassical theory of anisotropic transport at LaAlO3/SrTiO3 interfaces under in-plane magnetic field
• Strongly enhanced Rashba splittings in oxide heterostructure: a tantalite monolayer on BaHfO${}_3$
• The mechanism of spin-orbit coupling in a 2D oxide interface
• Magnetic and nematic orders of the 2DEG at oxide (111) surfaces and interfaces
• Interlayer RKKY Coupling in Bulk Rashba Semiconductors under Topological Phase Transition
• Theoretical models of Rashba spin splitting in asymmetric SrTiO3-based heterostructures
• Tunable Rashba spin-orbit coupling and its interplay with multiorbital effect and magnetic ordering at oxide interfaces
• Plasmons at the LaAlO${}_3$/SrTiO${}_3$ interface and Graphene-LaAlO${}_3$/SrTiO${}_3$ double layer
• Macroscopic description of the two-dimensional LaAlO${}_3$/SrTiO${}_3$ interface
• Tunable spin and orbital polarization in SrTiO3-based heterostructures
• Strain Engineering of the Intrinsic Spin Hall Conductivity in a SrTiO${}_3$ Quantum Well
• Ballistic transport through quantum point contacts of multi-orbital oxides
• Electrical and thermoelectric transport properties of two-dimensional fermionic systems with $k$-cubic spin-orbit coupling
• Two-dimensional electron gas at the LaAlO${}_3$/SrTiO${}_3$ inteface with a potential barrier
• Current-induced spin polarization in isotropic k-cubed Rashba model: Theoretical study for p-doped semiconductor heterostructures and perovskite oxides interfaces
• Possible Flexoelectric Origin of the Lifshitz Transition in LaAlO${}_3$/SrTiO${}_3$ Interfaces
• Mapping Rashba and Dresselhaus spin-orbit interactions to inversion asymmetry in perovskite oxide heterostructures
• Semiclassical spin transport in LaO/STO system in the presence of multiple Rashba spin orbit couplings
• Optical conductivity of a 2DEG with anisotropic Rashba interaction at the interface of LaAlO${}_3$/SrTiO${}_3$
• Tunneling anisotropic spin galvanic effect
• Magnetotransport of a 2DEG with anisotropic Rashba interaction at the LaAlO${}_3$/SrTiO${}_3$ interface
• Drift velocity of edge magnetoplasmons due to magnetic edge channels
• Engineering Helical Superconductors with Multiple Majorana Kramers Pairs via Higher-Order Rashba Spin-Orbit Coupling
• Anomalous Hall and Nernst effects in a two-dimensional electron gas with an anisotropic cubic Rashba spin-orbit interaction
• Scanning gate microscopy probing of anisotropic electron flow in a two dimensional electron gas at the (110) ${\mathrm{LaAlO}}_3/{\mathrm{SrTiO}}_3$ interface: A theoretical investigation