Coexistence of superconductivity and ferromagnetism in two dimensions

Abstract

Ferromagnetism is usually considered to be incompatible with conventional superconductivity, as it destroys the singlet correlations responsible for the pairing interaction. Superconductivity and ferromagnetism are known to coexist in only a few bulk rare-earth materials. Here we report evidence for their coexistence in a two-dimensional system: the interface between two bulk insulators, LaAlO${}_3$ (LAO) and SrTiO${}_3$ (STO), a system that has been studied intensively recently. Magnetoresistance, Hall and electric-field dependence measurements suggest that there are two distinct bands of charge carriers that contribute to the interface conductivity. The sensitivity of properties of the interface to an electric field make this a fascinating system for the study of the interplay between superconductivity and magnetism.

4 pages, 4 figures

References in corpus (4)

• Magnetic effects at the interface between nonmagnetic oxides
• Electric Field Control of the LaAlO${}_3$/SrTiO${}_3$ Interface Ground State
• Origin of charge density at LaAlO3-on-SrTiO3 hetero-interfaces; possibility of intrinsic doping
• Tailoring a two-dimensional electron gas at the LaAlO3/SrTiO3 (001) interface by epitaxial strain

Cited by in corpus (186)

• 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
• A Universal Critical Density Underlying the Physics of Electrons at the LaAlO3/SrTiO3 Interface
• Physics of SrTiO${}_3$-based heterostructures and nanostructures: a review
• Zero-field superconducting diode effect in small-twist-angle trilayer graphene
• Superconductivity and Ferromagnetism in Oxide Interface Structures: Possibility of Finite Momentum Pairing
• LaAlO3 stoichiometry found key to electron liquid formation at LaAlO3/SrTiO3 interfaces
• Origin of the two-dimensional electron gas at LaAlO3/SrTiO3 interfaces: The role of oxygen vacancies and electronic reconstruction
• Critical thickness for ferromagnetism in LaAlO3/SrTiO3 heterostructures
• Locally enhanced conductivity due to the tetragonal domain structure in LaAlO${}_3$/SrTiO${}_3$ heterointerfaces
• Topological Superconductivity in Two-Dimensional Altermagnetic Metals
• Origin of interface magnetism in BiMnO3/SrTiO3 and LaAlO3/SrTiO3 heterostructures
• Electrolyte gate-controlled Kondo effect in SrTiO3
• Ferromagnetic exchange, spin-orbit coupling and spiral magnetism at the LaAlO_3/SrTiO_3 interface
• Local Electrostatic Imaging of Striped Domain Order in LaAlO3/SrTiO3
• Magnetism and superconductivity at LAO/STO-interfaces: the role of Ti 3d interface electrons
• Nanoscale Phenomena in Oxide Heterostructures
• Oxygen vacancies at titanate interfaces: two-dimensional magnetism and orbital reconstruction
• Theory of the SrTiO3 Surface State Two-Dimensional Electron Gas
• Observation of two-dimensional superconductivity at the LaAlO3/KTaO3(110) heterointerface
• Preparation of atomically-flat SrTiO3 surfaces using a deionized-water etching and thermal annealing procedure
• A Gate-tunable Polarized Phase of Two-Dimensional Electrons at the LaAlO3/SrTiO3 Interface
• Persistent Optically Induced Magnetism in Oxygen-Deficient Strontium Titanate
• Two-dimensional Superconductors with Atomic-scale Thicknesses
• Unexpected Anisotropic Two Dimensional Electron Gas at the LaAlO3/SrTiO3 (110) Interface
• Phonon mechanism in the most dilute superconductor: n-type SrTiO3
• Carrier-controlled ferromagnetism in SrTiO3
• Upper limit to magnetism in LaAlO3/SrTiO3 heterostructures
• Nature of weak magnetism in SrTiO3/LaAlO3 multilayers
• Origin of the Magnetic Spin Hall Effect: Spin Current Vorticity in the Fermi Sea
• Six-fold crystalline anisotropic magnetoresistance in the (111) LaAlO${}_3$/SrTiO${}_3$ oxide interface
• Phase separation from electron confinement at oxide interfaces
• Giant Oscillating Thermopower at Oxide Interfaces
• In-plane electronic confinement in superconducting LaAlO${}_3$/SrTiO${}_3$ nanostructures
• Giant thermoelectric effects in a proximity-coupled superconductor-ferromagnet device
• Similarities and differences between nickelate and cuprate films grown on a SrTiO${}_3$ substrate
• Tuning the two-dimensional electron gas at the LaAlO3/SrTiO3(001) interface by metallic contacts
• Multi-band superconductivity and nanoscale inhomogeneity at oxide interfaces
• Observation of Quantum Griffiths Singularity and Ferromagnetism at Superconducting LaAlO3/SrTiO3(110) Interface
• Engineering two-dimensional electron gases at the (001) and (101) surfaces of TiO2 anatase using light
• Competing superfluid orders in spin-orbit coupled fermionic cold atom optical lattices
• Magnetic and Superconducting Ordering at LaAlO3/SrTiO3 Interfaces
• Spirals and skyrmions in two dimensional oxide heterostructures
• Novel photo-conducting state and its perturbation by electrostatic fields in oxide-based two-dimensional electron gas
• The Effect of Polar Fluctuation and Lattice Mismatch on Carrier Mobility at Oxide Interfaces
• Modulation of conductance and superconductivity by top-gating in LaAlO3/SrTiO3 2-dimensional electron systems
• Ferromagnetism in itinerant two-dimensional t2g systems
• Anisotropic transport at the LaAlO3/SrTiO3 interface explained by microscopic imaging of channel-flow over SrTiO3 domains
• Evidence for charge-vortex duality at the LaAlO${}_3$/SrTiO${}_3$ interface
• Anomalous orbital structure in a spinel-perovskite interface $\gamma$-Al${}_2$O${}_3$/SrTiO${}_3$
• Spin responses and effective Hamiltonian for the two dimensional electron gas at oxide interface {LaAlO}${}_3$/{SrTiO}${}_3$
• Tuning ferromagnetism at interfaces between insulating perovskite oxides
• Quantum interference in an interfacial superconductor
• Phase diagrams of voltage-gated oxide interfaces with strong Rashba coupling
• Electron-phonon Coupling and the Superconducting Phase Diagram of the LaAlO3-SrTiO3 Interface
• Enhanced spin-orbit interaction and Kondo scattering in $\delta$-doped LaTiO${}_3$/SrTiO${}_3$ interfaces
• Gate Tunable In- and Out-Of-Plane Spin-Orbit Coupling and Spin Splitting Anisotropy at LaAlO3/SrTiO3 (110) Interface
• Superconductivity with Rashba Spin-Orbit Coupling and Magnetic Field
• Topological superconductivity and Majorana bound states at the LaAlO${}_3$/SrTiO${}_3$ interface
• Optically excited multi-band conduction in LaAlO3/SrTiO3 heterostructures
• One-dimensional Quantum Wire Formed at the Boundary Between Two Insulating LaAlO3/SrTiO3 Interfaces
• Superconducting quantum point contact with split gates in the two dimensional LaAlO3/SrTiO3 superfluid
• Magnetic and electronic properties at the gamma-Al2O3/SrTiO3 interface
• Magnetoanisotropic spin-triplet Andreev reflection in ferromagnet-Ising superconductor junctions
• Anomalous magnetic ground state in LaAlO3/SrTiO3 interface probed by transport through nanowires
• Spontaneous rotational symmetry breaking in KTaO${}_3$ heterointerface superconductors
• Emergent Spin-Filter at the interface between Ferromagnetic and Insulating Layered Oxides
• Multi-Orbital Superconductivity in SrTiO3 /LaAlO3 Interface and SrTiO3 Surface
• Modulation of the superconducting critical temperature due to quantum confinement at the LaAlO${}_3$/SrTiO${}_3$ interface
• Two-dimensional electron gas in a modulation-doped SrTiO3/Sr(Ti,Zr)O3 heterostructure
• Anomalous Transport in Sketched Nanostructures at the LaAlO3/SrTiO3 Interface
• Digging up bulk band dispersion buried under a passivation layer
• Superconducting LaAlO3/SrTiO3 Nanowires
• Superconductor-metal quantum transition at the EuO-KTaO3 interface
• Ab Initio Theory of Superconductivity in a Magnetic Field I. : Spin Density Functional Theory For Superconductors and Eliashberg Equations
• Bandgap Controlling of the Oxygen-Vacancy-Induced Two-Dimensional Electron Gas in SrTiO3
• Anisotropic electrical resistance in mesoscopic LaAlO${}_3$/SrTiO${}_3$ devices with individual domain walls
• Local nuclear and magnetic order in the two-dimensional spin glass, Mn${}_{0.5}$Fe${}_{0.5}$PS${}_3$
• Magnetotransport effects in polar versus non-polar SrTiO3 based heterostructures
• Microscopic theory for a ferromagnetic-nanowire/superconductor heterostructure: Transport, fluctuations and topological superconductivity
• Rashba spin-orbit coupling in the square lattice Hubbard model: A truncated-unity functional renormalization group study
• Large Negative Electronic Compressibility of LaAlO3-SrTiO3 Interfaces with Ultrathin LaAlO3 Layers
• Anisotropic, multi-carrier transport at the (111) LaAlO${}_3$/SrTiO${}_3$ interface
• Termination control of electronic phases in oxide thin films and interfaces: LaAlO3/SrTiO3(001)
• Chemical potential shift and gap-state formation in SrTiO${}_{3-\delta }$ revealed by photoemission spectroscopy
• 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
• Inhomogeneous multi-carrier superconductivity at LaXO3/SrTiO3 (X=Al or Ti) oxide interfaces
• Multi-band theory of superconductivity at the LaAlO${}_3$/SrTiO${}_3$ interface
• Self-consistent iteration procedure in analyzing reflectivity and spectroscopic ellipsometry data of multilayered materials and their interfaces
• Magnetoresistance in the superconducting state at the (111) LaAlO${}_3$/SrTiO${}_3$ interface
• Two-dimensional electron-gas-like charge transport at magnetic Heusler alloy-SrTiO${}_3$ interface
• Coexistence of ferromagnetism and superconductivity at KTaO${}_3$ heterointerfaces
• Electric-field-induced pyroelectric order and localization of the confined electrons in LaAlO3/SrTiO3 heterostructures
• Pseudo-gap in tunneling spectra as a signature of inhomogeneous superconductivity in oxide interfaces
• Nanoscale control of the metal-insulator transition at LAO/KTO (110) and LAO/KTO (111) interfaces
• Ferroelectric Exchange Bias Affects Interfacial Electronic States
• A two-dimensional electron gas based on a 5s oxide with high room-temperature mobility and strain sensitivity
• Two-dimensional electron systems in ATiO3 perovskites (A = Ca, Ba, Sr): control of orbital hybridization and order
• Atomically flat interface between a single-terminated LaAlO3 substrate and SrTiO3 thin film is insulating
• Evolution of ferromagnetism in two-dimensional electron gas of LaTiO3/SrTiO3
• The Conducting Channel at the LaAlO${}_3$/SrTiO${}_3$ Interface
• The Pairing of Spin-orbit Coupled Fermi Gas in Optical Lattice
• Electronic and Magnetic Reconstructions in Manganite Superlattices
• Alleviating polarity-conflict at the heterointerfaces of KTaO${}_3$/GdScO${}_3$ polar complex-oxides
• The mechanism of spin-orbit coupling in a 2D oxide interface
• Magnetic and nematic orders of the 2DEG at oxide (111) surfaces and interfaces
• Enhanced superconductivity at the interface of W/Sr${}_2$RuO${}_4$ point contact
• Ferroelectric control of spin-polarized two-dimensional electron gas
• Room-temperature quantum transport signatures in graphene/LaAlO3/SrTiO3 heterostructures
• Evidence for Superconducting Phase Coherence in the Metallic/Insulating Regime of the LaAlO3-SrTiO3 Interface Electron System
• Oxygen-vacancy clustering and pseudogap behaviour at LaAlO3/SrTiO3 interface
• Infrared ellipsometry study of the photo-generated charge carriers at the (001) and (110) surfaces of SrTiO${}_3$ crystals and the interface of corresponding LaAlO${}_3$/SrTiO${}_3$ heterostructures
• Ferromagnetism and spin-dependent transport at a complex oxide interface
• Coexistence of charge and ferromagnetic order in fcc Fe
• Gate-tunable superconductivity at SrTiO3 surface realized by Al layer evaporation
• Macroscopic description of the two-dimensional LaAlO${}_3$/SrTiO${}_3$ interface
• Influence of the ferroelectric quantum critical point on SrTiO${}_3$ interfaces
• Tunable spin and orbital polarization in SrTiO3-based heterostructures
• Intrinsic magnetism in KTaO${}_3$ heterostructures
• Disentangling spin-orbit coupling and local magnetism in a quasi-two-dimensional electron system
• Superconductivity and Frozen Electronic States at the (111) LaAlO${}_3$/SrTiO${}_3$ Interface
• Theory of magnetic response in finite two-dimensional superconductors
• Hidden Order as a Source of Interface Superconductivity
• Phase segregation of superconductivity and ferromagnetism at LaAlO${}_3$/SrTiO${}_3$ interface
• Engineered Kondo screening and nonzero Berry phase in SrTiO3/LaTiO3/SrTiO3 heterostructures
• Interplay between sheet resistance increase and magnetotransport properties in $\mathrm{LaAl}{\mathrm{O}}_3/\mathrm{SrTi}{\mathrm{O}}_3$
• Quantum transport in topological insulator hybrid structures -- A combination of topological insulator and superconductor
• Subband structure of two-dimensional electron gases in SrTiO3
• Band offsets at amorphous-crystalline $A{l}_2{O}_3-SrTi{O}_3$ oxide interfaces
• Universal Conductance Fluctuations in Electrolyte-Gated SrTiO3 Nanostructures
• Temperature-Dependent Band Structure of SrTiO${}_3$ Interfaces
• Giant magnetoelectric effect in pure manganite-manganite heterostructures
• Magnetic field tuned superconductor-to-insulator transition at the LaAlO${}_3$ /SrTiO${}_3$ interface
• Anomalous transport near the Lifshitz transition at the LaAlO${}_3$/SrTiO${}_3$ interface
• Observation of transient superconductivity at the LaAlO${}_3$/SrTiO${}_3$ interface
• Density inhomogeneities and Rashba spin-orbit coupling interplay in oxide interfaces
• Signatures of Electronic Nematicity in (111) LaAlO${}_3$/SrTiO${}_3$ Interfaces
• Probing chiral superconductivity in Sr${}_2$RuO${}_4$ underneath the surface by point contact measurements
• Nature of electrons from oxygen vacancies and polar catastrophe at LaAlO3/SrTiO3 interfaces
• Effect of multiband transport on charge carrier density fluctuations at the LaAlO${}_3$/SrTiO${}_3$ interface
• Conducting LaAlO3/SrTiO3 heterointerfaces on atomically flat substrates prepared by deionized-water
• Transport and thermoelectric properties of the LaAlO${}_3$/SrTiO${}_3$ interface
• Possible Flexoelectric Origin of the Lifshitz Transition in LaAlO${}_3$/SrTiO${}_3$ Interfaces
• Electronic and magnetic properties in strongly correlated heterostructures
• Electrical domain writing and nanoscale potential modulation on LaVO${}_3$/SrTiO${}_3$
• Magnetothermopower of $\delta$-doped LaTiO${}_3$/SrTiO${}_3$ interfaces in the Kondo regime
• Electrostatic tuning of magnetism at the conducting (111) (La${}_{0.3}$Sr${}_{0.7}$)(Al${}_{0.65}$Ta${}_{0.35}$)/SrTiO${}_3$ interface
• Observation of zero-field transverse resistance in AlO${}_x$/SrTiO${}_3$ interface devices
• Rashba spin-orbit coupling in infinite-layer nickelate films on SrTiO3(001) and KTaO3(001)
• The Vortex Signature of Discrete Ferromagnetic Dipoles at the LaAlO${}_3$/SrTiO${}_3$ Interface
• Theory of Self-Induced Vortex State in Ferromagnetic Superconductors
• Torque magnetometry of an amorphous-alumina/strontium-titanate interface
• Direct observation of spin-orbit coupling in iron-based superconductors
• Multi-orbital Fulde-Ferrell-Larkin-Ovchinnikov State in SrTiO_3 Heterostructures
• Low temperature magnetoresistance of (111) (La${}_{0.3}$Sr${}_{0.7}$)(Al${}_{0.65}$Ta${}_{0.35}$)/SrTiO${}_3$
• Conducting and insulating LaAlO${}_3$/SrTiO${}_3$ interfaces: A comparative surface photovoltage investigation
• Coexistence of high electron-mobility, unpaired spins, and superconductivity at high carrier density SrTiO${}_3$-based interfaces
• The interface between Sr${}_2$RuO${}_4$ and Ru-metal inclusion--Implications for its superconductivity
• Solution Monolayer Epitaxy for Tunable Atomically Sharp Oxide Interfaces
• Evolution of domain structure with electron doping in ferroelectric thin films
• Metallic interfaces in a CaTiO${}_3$/LaTiO${}_3$ heterostructure
• 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
• On the ferromagnetic character of (LaVO${}_3$)${}_m$/SrVO${}_3$ superlattices
• Strong spin-orbit coupling and magnetism in (111) (La${}_{0.3}$Sr${}_{0.7}$)(Al${}_{0.65}$Ta${}_{0.35})$/SrTiO${}_3$
• Magnetotransport of a 2DEG with anisotropic Rashba interaction at the LaAlO${}_3$/SrTiO${}_3$ interface
• Modified transverse Ising model for the dielectric properties of SrTiO${}_3$ films and interfaces
• Spectral properties of superconductors with ferromagnetically ordered magnetic impurities
• Magnetically ordered state at correlated oxide interfaces: the role of random oxygen defects
• p-wave superconductivity in weakly repulsive 2D Hubbard model with Zeeman splitting and weak Rashba spin-orbit coupling
• Magnetoresistance hysteresis in the superconduting state of Kagome CsV${}_3$Sb${}_5$
• Transient vortex dynamics and evolution of Bose metal from a 2D superconductor on MoS${}_2$
• Strong Aharonov-Bohm quantum interference in simply-connected LaAlO${}_3$/SrTiO${}_3$ structures
• Formation of a conducting LaAlO${}_3$ / SrTiO${}_3$ interface studied by low energy electron reflection during growth
• La displacement driven Double-exchange like mediation in Titanium $d_{xy}$ ferromagnetism at the LaAlO${}_3$/SrTiO${}_3$
• Current-induced magnetoresistance hysteresis in the kagome superconductor CsV${}_3$Sb${}_5$
• Magnon damping and mode softening in quantum double-exchange ferromagnets
• Density-tuned isotherms and dynamic change at phase transition in a gate-controlled superconducting system
• Absence of localized $5d^1$ electrons in KTaO${}_3$ interface superconductors
• Ab initio study of orbital-selective superconductivity in $\gamma$-BiPd
• Electrically controlled quantum transition to an anomalous metal in 2D
• Controlling Spin-Mixing Conductance in KTaO${}_3$ 2DEGs by Varying Argon-Ion Irradiation Time
• Lithography-free patterning of SrTiO${}_3$-based two-dimensional electron gases using direct atomic layer processing
• Graphene-Complex-oxide Nanoscale Device Concepts
• Excitations and spin correlations near the interface of two three-dimensional Heisenberg antiferromagnets