Planar Hall Effect and Anisotropic Magnetoresistance in a polar-polar interface of LaVO${}_3$-KTaO${}_3$ with strong spin-orbit coupling

Abstract

Among the perovskite oxide family, KTaO${}_3$ (KTO) has recently attracted considerable interest as a possible system for the realization of the Rashba effect. In this work, we improvise a novel conducting interface by juxtaposing KTO with another insulator, namely LaVO${}_3$ (LVO) and report planar Hall effect (PHE) and anisotropic magnetoresistance (AMR) measurements. This interface exhibits a signature of strong spin-orbit coupling. Our experimental observation of two fold AMR at low magnetic fields can be intuitively understood using a phenomenological theory for a Rashba spin-split system. At high fields ($\sim$8 T), we see a two fold to four fold transition in the AMR that could not be explained using only Rashba spin-split energy spectra. We speculate that it might be generated through an intricate process arising from the interplay between strong spin-orbit coupling, broken inversion symmetery, relativistic conduction electron and possible uncompensated localized vanadium spins.

References in corpus (25)

• Tunable Rashba spin-orbit interaction at oxide interfaces
• Highly efficient and tuneable spin-to-charge conversion through Rashba coupling at oxide interfaces
• Chiral anomaly as origin of planar Hall effect in Weyl semimetals
• Giant Planar Hall Effect in Topological Metals
• Polar Discontinuity Doping of the LaVO_3/SrTiO_3 Interface
• Subband structure of a two-dimensional electron gas formed at the polar surface of the strong spin-orbit perovskite KTaO${}_3$
• Planar Hall effect in the Weyl semimetal GdPtBi
• Planar Hall effect from the surface of topological insulators
• Anisotropic magneto-transport effects at SrTiO3\LaAlO3 interfaces
• Electric Field Tuning of the Rashba Effect in the Polar Perovskite Structures
• Creation of high mobility two-dimensional electron gases via strain induced polarization at an otherwise nonpolar complex oxide interface
• Gate-tuned Differentiation of Surface-conducting States in Bi1.5Sb0.5Te1.7Se1.3 Topological-insulator Thin Crystals
• Planar Hall effect in type II Dirac semimetal VAl${}_3$
• Anisotropic magnetoresistance of spin-orbit coupled carriers scattered from polarized magnetic impurities
• Berry phase theory of planar Hall effect in Topological Insulators
• Six-fold crystalline anisotropic magnetoresistance in the (111) LaAlO${}_3$/SrTiO${}_3$ oxide interface
• Local Ferroelectricity in SrTiO_3 Thin Films
• Phase diagrams of voltage-gated oxide interfaces with strong Rashba coupling
• Theory of the spin galvanic effect at oxide interfaces
• Unconventional Planar Hall Effect in Exchange-Coupled Topological Insulator-Ferromagnetic Insulator Heterostructures
• Gate Tunable In- and Out-Of-Plane Spin-Orbit Coupling and Spin Splitting Anisotropy at LaAlO3/SrTiO3 (110) Interface
• Topological Properties and Functionalities in Oxide Thin Films and Interfaces
• Photoinduced Rashba spin to charge conversion via interfacial unoccupied state
• Magnetic-field-driven topological transitions in non-centrally-symmetric energy spectrum of 2D electron gas with Rashba-Dresselhaus spin-orbit interaction
• Intrinsic spin Hall effect in systems with striped spin-orbit coupling

Cited by in corpus (35)

• Oxide spin-orbitronics: spin-charge interconversion and topological spin textures
• Observation of two-dimensional superconductivity at the LaAlO3/KTaO3(110) heterointerface
• Anisotropic magnetoresistance: materials, models and applications
• Spin-charge interconversion in KTaO${}_3$ two-dimensional electron gases
• Anomalous Planar Hall Effect in Two-Dimensional Trigonal Crystals
• Direct visualization of Rashba-split bands and spin/orbital-charge interconversion at KTaO${}_3$ interfaces
• Oxygen vacancy induced electronic structure modification of KTaO${}_3$
• Spontaneous rotational symmetry breaking in KTaO${}_3$ heterointerface superconductors
• Molecular Beam Epitaxy of KTaO${}_3$
• Planar Hall effect with sixfold oscillations in a Dirac antiperovskite
• Coexistence of superconductivity and weak anti-localization at KTaO3 (111) interfaces
• Quantum nonlinear planar Hall effect in bilayer graphene: an orbital effect of a steady in-plane magnetic field
• Oxygen Vacancy-Induced Topological Hall effect in a Nonmagnetic Band Insulator
• Hidden orders in spin-orbit entangled correlated insulators
• Electronic subbands in the a-LaAlO${}_3$/KTaO${}_3$ interface revealed by quantum oscillations in high magnetic fields
• Oxygen vacancy-induced anomalous Hall effect in a nominally non-magnetic oxide
• Ionic modulation at the LaAlO${}_3$/KTaO${}_3$ interface for extreme high-mobility two-dimensional electron gas
• Unveiling an in-plane Hall effect in rutile RuO${}_2$ films
• Finite transverse conductance and anisotropic magnetoconductance under an applied in-plane magnetic field in two-dimensional electron gases with strong spin-orbit coupling
• Giant Rashba spin splitting in strained KTaO3 ultrathin films for circular photogalvanic currents
• Rashba-like spin-orbit interaction and spin texture at the KTaO${}_{\text{3}}$ (001) surface from DFT calculations
• Orbital origin of fourfold anisotropic magnetoresistance in Dirac materials
• Superconductivity in epitaxially grown LaVO3/KTaO3(111) heterostructures
• Superconducting quantum oscillations and anomalous negative magnetoresistance in a honeycomb nanopatterned oxide interface superconductor
• Rashba spin-orbit coupling in infinite-layer nickelate films on SrTiO3(001) and KTaO3(001)
• Unconventional quantum oscillations and evidence of nonparabolic electronic states in quasi-two-dimensional electron system at complex oxide interfaces
• Interplay between exchange split Dirac and Rashba-type surface states in MnBi${}_2$Te${}_4$/BiTeI interface
• Surface charge writing and non-volatile control of superconductivity in LaAlO3/KTaO3(111) heterostructure
• Planar Hall effect from superconducting fluctuations
• Anisotropic magnetoresistance and memory effect in bulk systems with extended defects
• Large Rashba parameter for 4d strongly correlated perovskite oxide SrNbO3 ultrathin films
• Violation of Pauli Limit at KTaO3(110) Interfaces
• Artificial oxide heterostructures with non-trivial topology
• Layer-dependent electronic structures and magnetic ground states of polar-polar $\mathrm{LaV}{\mathrm{O}}_3/KTa{\mathrm{O}}_3$ (001) heterostructures
• Controlling Spin-Mixing Conductance in KTaO${}_3$ 2DEGs by Varying Argon-Ion Irradiation Time