Spirals and skyrmions in two dimensional oxide heterostructures

Abstract

We construct the general free energy governing long-wavelength magnetism in two-dimensional oxide heterostructures, which applies irrespective of the microscopic mechanism for magnetism. This leads, in the relevant regime of weak but non-negligible spin-orbit coupling, to a rich phase diagram containing in-plane ferromagnetic, spiral, cone, and skyrmion lattice phases, as well as a nematic state stabilized by thermal fluctuations. The general conclusions are vetted by a microscopic derivation for a simple model with Rashba spin-orbit coupling.

4+2 pages, 5 figures, version as accepted by Phys. Rev. Lett

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• Skyrmions in Chiral Magnets with Rashba and Dresselhaus Spin-Orbit Coupling
• Stability of skyrmion lattices and symmetries of quasi-two-dimensional chiral magnets
• Chiral Bobbers and Skyrmions in Epitaxial FeGe/Si(111) Films
• Double perovskite heterostructures: Magnetism, Chern bands, and Chern insulators
• Topological Hall Effect and Emergent Skyrmion Crystal in Manganite-Iridate Oxide Interfaces
• Interface-induced magnetism in perovskite quantum wells
• Competition Between Kondo Screening and Magnetism at the LaAlO${}_3$/SrTiO${}_3$ Interface
• Spin responses and effective Hamiltonian for the two dimensional electron gas at oxide interface {LaAlO}${}_3$/{SrTiO}${}_3$
• Topological Properties and Functionalities in Oxide Thin Films and Interfaces
• Topological strength of magnetic skyrmions
• Planar Topological Hall Effect from Conical Spin Spirals
• Anomalous Fermi liquid phase in metallic Skyrmion crystals
• Topological excitations in rotating Bose-Einstein condensates with Rashba-Dresselhaus spin-orbit coupling in a two-dimensional optical lattice
• Multi-band theory of superconductivity at the LaAlO${}_3$/SrTiO${}_3$ interface
• Multiple-$Q$ magnetic orders in Rashba-Dresselhaus metals
• Skyrmionic magnetization configurations at chiral magnet/ferromagnet heterostructures
• Magnetic and nematic orders of the 2DEG at oxide (111) surfaces and interfaces
• Dimension transcendence and anomalous charge transport in magnets with moving multiple-$Q$ spin textures
• Tunable Rashba spin-orbit coupling and its interplay with multiorbital effect and magnetic ordering at oxide interfaces
• Electric field control of moiré skyrmion phases in twisted multiferroic NiI${}_2$ bilayers
• Emergent c-axis magnetic helix in manganite-nickelate superlattices
• Interfacial phase frustration stabilizes unconventional skyrmion crystals
• Topological defects of spin-orbit coupled Bose-Einstein condensates in a rotating anharmonic trap
• Spin-orbit effects surfacing on manganites
• Tunable skyrmion crystals and topological quantum oscillations in magnetic metals
• Incommensurate spin density wave as a signature of spin-orbit coupling
• Anomalous magnetoentropic response of skrymion crystals
• Strong spin-orbit coupling and magnetism in (111) (La${}_{0.3}$Sr${}_{0.7}$)(Al${}_{0.65}$Ta${}_{0.35})$/SrTiO${}_3$
• Zero-energy Bound States in Nodal Topological Lattice
• Potential Fluctuations at Low Temperatures in Mesoscopic-Scale SmTiO${}_3$/SrTiO${}_3$/SmTiO${}_3$ Quantum Well Structures
• Carbon-dioxide-like Skyrmion controlled by spin-orbit coupling in atomic-molecular Bose-Einstein condensates
• Transport properties of Rashba conducting strips coupled to magnetic moments with spiral order