Electrolyte gate-controlled Kondo effect in SrTiO3

Abstract

We report low-temperature, high-field magnetotransport measurements of SrTiO3 gated by an ionic gel electrolyte. A saturating resistance upturn and negative magnetoresistance that signal the emergence of the Kondo effect appear for higher applied gate voltages. This observation, enabled by the wide tunability of the ionic gel-applied electric field, promotes the interpretation of the electric field-effect induced 2D electron system in SrTiO3 as an admixture of magnetic Ti3+ ions, i.e. localized and unpaired electrons, and delocalized electrons that partially fill the Ti 3d conduction band.

arXiv commentMinor changes and Supp Info added

References in corpus (20)

• Kondo Physics in a Single Electron Transistor
• Magnetic effects at the interface between nonmagnetic oxides
• Why Some Interfaces Cannot be Sharp
• Tunable Rashba spin-orbit interaction at oxide interfaces
• Direct imaging of the coexistence of ferromagnetism and superconductivity at the LaAlO3/SrTiO3 interface
• Coexistence of Magnetic Order and Two-dimensional Superconductivity at LaAlO${}_3$/SrTiO${}_3$ Interfaces
• From the Kondo Regime to the Mixed-Valence Regime in a Single-Electron Transistor
• Unveiling a two-dimensional electron gas with universal subbands at the surface of SrTiO3
• High Mobility in LaAlO3/SrTiO3 Heterostructures: Origin, Dimensionality and Perspectives
• Origin of charge density at LaAlO3-on-SrTiO3 hetero-interfaces; possibility of intrinsic doping
• Coexistence of superconductivity and ferromagnetism in two dimensions
• Transport Coefficients of the Anderson Model via the Numerical Renormalization Group
• Tunable Kondo Effect in Graphene with Defects
• Kondo effect in a magnetic field and the magnetoresistivity of Kondo alloys
• Orbital reconstruction and two-dimensional electron gas at the LaAlO3/SrTiO3 interface
• Two-dimensional quantum oscillations of the conductance at LaAlO3/SrTiO3 interfaces
• Shubnikov-de Haas oscillations in SrTiO3\LaAlO3 interface
• Anisotropic magneto-transport effects at SrTiO3\LaAlO3 interfaces
• Phase diagram of electrostatically doped Strontium Titanate (SrTiO3)
• Electronic Phases and Phase Separation in the Hubbard-Holstein Model of a Polar Interface

Cited by in corpus (63)

• Interface-Induced Phenomena in Magnetism
• Physics of SrTiO${}_3$-based heterostructures and nanostructures: a review
• Room-Temperature Electronically-Controlled Ferromagnetism at the LaAlO3/SrTiO3 Interface
• Observation of the SU(4) Kondo state in a double quantum dot
• Theory of the SrTiO3 Surface State Two-Dimensional Electron Gas
• A Gate-tunable Polarized Phase of Two-Dimensional Electrons at the LaAlO3/SrTiO3 Interface
• Electron Correlation in Oxygen Vacancy in SrTiO${}_3$
• Persistent Optically Induced Magnetism in Oxygen-Deficient Strontium Titanate
• Coexistence of trapped and free excess electrons in SrTiO3
• A high-mobility electronic system at an electrolyte-gated oxide surface
• Carrier-controlled ferromagnetism in SrTiO3
• Transistor operation and mobility enhancement in top-gated LaAlO_3 / SrTiO_3 heterostructures
• Surface magnetism of strontium titanate
• Shubnikov-de Haas effect in low electron density SrTiO3: Conduction band edge of SrTiO3 redux
• Giant tunability of the two-dimensional electron gas at the interface of gamma-Al2O3/SrTiO3
• Magnetic and Superconducting Ordering at LaAlO3/SrTiO3 Interfaces
• $c$-axis transport in UTe${}_2$: Evidence of Three Dimensional Conductivity Component
• Competition Between Kondo Screening and Magnetism at the LaAlO${}_3$/SrTiO${}_3$ Interface
• Inducing ferromagnetism and Kondo effect in platinum by paramagnetic ionic gating
• Spin injection and detection in lanthanum- and niobium-doped SrTiO3 using the Hanle technique
• Interplay between topology and correlations in the second moiré band of twisted bilayer MoTe2
• Quantum longitudinal and Hall transport at the LaAlO3/SrTiO3 interface at low electron densities
• Mechanism for the Large Conductance Modulation in Electrolyte-gated Thin Gold Films
• Controlling Kondo-like Scattering at the SrTiO3-based Interfaces
• Topological states at the (001) surface of SrTiO3
• Enhanced spin-orbit interaction and Kondo scattering in $\delta$-doped LaTiO${}_3$/SrTiO${}_3$ interfaces
• Absence of Giant Spin Splitting in the Two-Dimensional Electron Liquid at the Surface of SrTiO${}_3$ (001)
• Voltage Controlled Interfacial Layering in an Ionic Liquid on SrTiO${}_3$
• Electron degeneracy and intrinsic magnetic properties of epitaxial Nb:SrTiO${}_3$ thin-films controlled by defects
• Magnetic interactions at the nanoscale in trilayer titanates LaTiO${}_3$/SrTiO${}_3$/YTiO${}_3$
• Anisotropic electrical resistance in mesoscopic LaAlO${}_3$/SrTiO${}_3$ devices with individual domain walls
• Magnetotransport effects in polar versus non-polar SrTiO3 based heterostructures
• Enhanced spin-orbit coupling and charge carrier density suppression in LaAl1-xCrxO3/SrTiO3 heterointerfaces
• Thermally excited multi-band conduction in LaAlO3/SrTiO3 heterostructures exhibiting magnetic scattering
• The Role of Oxygen in Ionic Liquid Gating on 2D Cr2Ge2Te6: a Non-Oxide Material
• Lithium-ion-based solid electrolyte tuning of the carrier density in graphene
• Dynamics of photo-generated non-equilibrium electronic states in Ar${}^{+}$ ion irradiated SrTiO${}_3$
• From Weak Antilocalization to Kondo Scattering in a Magnetic Complex Oxide Interface
• Growth and characterization of the La${}_3$Ni${}_2$O${}_{7-\delta }$ thin films: dominant contribution of the $d_{x^2-y^2}$ orbital at ambient pressure
• Interaction between magnetic moments and itinerant carriers in d0 ferromagnetic SiC
• Quantized critical supercurrent in SrTiO${}_3$-based quantum point contacts
• Engineered Kondo screening and nonzero Berry phase in SrTiO3/LaTiO3/SrTiO3 heterostructures
• Kinetic theory of electronic transport in random magnetic fields
• Polaronic nature of a muonium-related paramagnetic center in SrTiO${}_3$
• Universal Conductance Fluctuations in Electrolyte-Gated SrTiO3 Nanostructures
• Upper critical magnetic field and multiband superconductivity in artificial high-Tc superlattices of nano quantum wells
• Spin-Orbit Interaction and Kondo Scattering at the PrAlO${}_3$/SrTiO${}_3$ Interface: Effects of Oxygen Content
• Photoinduced Kondo effect in CeZn${}_3$P${}_3$
• Kondo effect with tunable spin orbit interaction in LaTiO3/CeTiO3/SrTiO3 heterostructure
• Ionic liquid gating of SrTiO${}_3$ lamellas fabricated with a focused ion beam
• Strain-dependent Insulating State and Kondo Effect in Epitaxial SrIrO${}_3$ Films
• Magnetothermopower of $\delta$-doped LaTiO${}_3$/SrTiO${}_3$ interfaces in the Kondo regime
• The Vortex Signature of Discrete Ferromagnetic Dipoles at the LaAlO${}_3$/SrTiO${}_3$ Interface
• Low temperature magnetoresistance of (111) (La${}_{0.3}$Sr${}_{0.7}$)(Al${}_{0.65}$Ta${}_{0.35}$)/SrTiO${}_3$
• Optical conductivity of the $t_{2g}$ two-dimensional electron gas
• Revealing Optically Induced Magnetization in SrTiO${}_3$ using Optically Coupled SQUID Magnetometry and Magnetic Circular Dichroism
• Kondo effect goes anisotropic in vanadate oxide superlattices
• Sign-changing non-monotonic voltage gain of HfO2/Parylene-C/SrTiO3 field-effect transistor due to percolative insulator to two-dimensional metal transition
• Emergent p-wave Kondo Coupling in Multi-Orbital Bands with Mirror Symmetry Breaking
• Magnetism and nonlinear charge transport in NiFe2O4/γ-Al2O3/SrTiO3 heterostructure: Toward Spintronic Applications
• Ferromagnetic Two-dimensional Electron Gases with Magnetic Doping and Proximity Effects
• Ionic liquid gating of InAs nanowire-based field effect transistors
• Lithography-free patterning of SrTiO${}_3$-based two-dimensional electron gases using direct atomic layer processing