Promoted current-induced spin polarization in inversion symmetry broken topological insulator thin films
arXiv:2505.17294 · doi:10.1016/j.rinp.2025.108445
Abstract
We theoretically investigate current-induced spin polarization in disordered topological insulator thin films with broken inversion symmetry under an applied in-plane electric field. Utilizing the Kubo formalism within the self-consistent Born approximation and incorporating vertex corrections to account for multiple scattering events, we analyze how disorder, chemical potential, the electrostatic potential difference between the top and bottom surfaces, and momentum-dependent hybridization affect the spin susceptibility. Our results reveal that the spin susceptibility exhibits nonzero values within a finite range around a zero gap, and this range broadens as the chemical potential increases. A higher hybridization strength induces asymmetry in the spin response. A stronger potential difference, breaking inversion symmetry, significantly enhances polarization. This enhancement is a trend attributable to band inversion and is further refined by vertex corrections. These findings provide a theoretical framework for tuning spin-charge conversion in topological thin films, with implications for spintronic device applications.
35 pages, 10 figures
References in corpus (63)
- Topological Insulators
- Topological insulators and superconductors
- Spintronics: Fundamentals and applications
- Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
- Quantum Spin Hall Insulator State in HgTe Quantum Wells
- Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
- A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
- Classification of topological insulators and superconductors in three spatial dimensions
- Spin Hall effect
- Classification of topological quantum matter with symmetries
- Quantized Anomalous Hall Effect in Magnetic Topological Insulators
- New Perspectives for Rashba Spin-Orbit Coupling
- Topological Insulator Materials
- Spin Transfer Torque Generated by the Topological Insulator Bi_2Se_3
- Crossover of Three-Dimensional Topological Insulator of Bi2Se3 to the Two-Dimensional Limit
- The quantum spin Hall effect and topological insulators
- Seeing the magnetic monopole through the mirror of topological surface states
- Magnetoelectric polarizability and axion electrodynamics in crystalline insulators
- Introduction to topological superconductivity and Majorana fermions
- Three-Dimensional Topological Insulators
- Massive Dirac fermions and spin physics in an ultrathin film of topological insulator
- Magnetic impurities on the surface of a topological insulator
- Band structure engineering in (Bi1-xSbx)2Te3 ternary topological insulators
- Giant Magneto-optical Kerr Effect and Universal Faraday Effect in Thin-film Topological Insulators
- Spatial imaging of the spin Hall effect and current-induced polarization in two-dimensional electron gases
- Current induced electron spin polarization in strained semiconductors
- Effective continuous model for surface states and thin films of three dimensional topological insulators
- Quintuple-layer epitaxy of high-quality Bi2Se3 thin films for topological insulator
- Charge-to-Spin Conversion by the Rashba-Edelstein Effect in 2D van der Waals Heterostructures up to Room Temperature
- Spin and Charge Transport on the Surface of a Topological Insulator
- Ordering of magnetic impurities and tunable electronic properties of topological insulators
- Spin Relaxation Anisotropy in Two-Dimensional Semiconductor Systems
- Charge and spin Hall conductivity in metallic graphene
- Topological magneto-electric effects in thin films of topological insulators
- Transport in three-dimensional topological insulators: theory and experiment
- Coherent Topological Transport on the Surface of Bi2Se3
- Chirality-Induced Electrical Generation of Magnetism in Nonmagnetic Elemental Tellurium
- Switching of Charge-Current-Induced Spin Polarization in the Topological Insulator BiSbTeSe2
- Gate-Tunable Reversible Rashba-Edelstein Effect in a Few-Layer Graphene/2H-TaS2 Heterostructure at Room Temperature
- Magnetic-proximity-induced magnetoresistance on topological insulators
- Theory of bi-linear magnetoresistance within the minimal model for surface states in topological insulators
- Direct comparison of current-induced spin polarization in topological insulator Bi2Se3 and InAs Rashba states
- Theory of current-induced spin polarizations in an electron gas
- Electrically Controlled Spin Injection from Giant Rashba Spin-Orbit Conductor BiTeBr
- Current-induced spin polarization in graphene due to Rashba spin-orbit interaction
- Origin and evolution of surface spin current in topological insulators
- Spin-polarized tunneling current through a thin film of topological insulator in a parallel magnetic field
- Current-induced spin polarization at the surface of metallic films: a theorem and an ab initio calculation
- Analogs of Rashba-Edelstein effect from density functional theory
- Interpreting current-induced spin polarization in topological insulator surface states
- Highly Tunable Spin-Orbit Torque and Anisotropic Magnetoresistance in a Topological Insulator Thin Film Attached to Ferromagnetic Layer
- Bulk electron spin polarization generated by the spin Hall current
- Theory of the inverse spin galvanic effect in quantum wells
- Topological insulator spin transistor
- Anomalous Hall Coulomb drag of massive Dirac fermions
- Opposite current-induced spin polarizations in bulk-metallic Bi2Se3 and bulk-insulating Bi2Te2Se topological insulator thin flakes
- Electrical detection of spin-polarized current in topological insulator Bi1.5Sb0.5Te1.7Se1.3
- Room temperature nonlocal detection of charge-spin interconversion in a topological insulator
- Low-energy modeling of three-dimensional topological insulator nanostructures
- Detection of current induced spin polarization in epitaxial BiTe thin film
- Current-induced spin polarization at metallic surfaces from first-principles
- The influence of anisotropic Rashba spin-orbit coupling on current-induced spin polarization in graphene
- Enhanced and stable spin Hall conductivity in a disordered time-reversal and inversion symmetry broken topological insulator thin film