Magnon-induced superconductivity in a topological insulator coupled to ferro- and antiferromagnetic insulators
arXiv:1802.09524 · doi:10.1103/PhysRevB.97.195438
Abstract
We study the effective interactions between Dirac fermions on the surface of a three-dimensional topological insulator due to the proximity coupling to the magnetic fluctuations in a ferromagnetic or antiferromagnetic insulator. Our results show that the magnetic fluctuations can mediate attractive interactions between Dirac fermions of both Amperean and BCS type. In the ferromagnetic case, we find pairing between fermions with parallel momenta, so-called Amperean pairing, whenever the effective Lagrangian for the magnetic fluctuations does not contain a quadratic term. The pairing interaction also increases with increasing Fermi momentum, and is in agreement with previous studies in the limit of high chemical potential. If a quadratic term is present, the pairing is instead of BCS type above a certain chemical potential. In the antiferromagnetic case, BCS pairing occurs when the ferromagnetic coupling between magnons on the same sublattice exceeds the antiferromagnetic coupling between magnons on different sublattices. Outside this region in parameter space, we again find that Amperean pairing is realized.
arXiv comment9 pages, 6 figures, revised version
References in corpus (33)
- Topological Insulators
- Topological insulators and superconductors
- Dirac materials
- Room-temperature antiferromagnetic memory resistor
- Inverse Spin-Galvanic Effect in a Topological-Insulator/Ferromagnet Interface
- Antiferromagnonic Spin Transport from YFeO into NiO
- Enhancement of Thermally Injected Spin Current through an Antiferromagnetic Insulator
- Berry phase of non-ideal Dirac fermions in topological insulators
- Tailoring Exchange Couplings in Magnetic Topological Insulator/Antiferromagnet Heterostructures
- Above 400 K Robust Perpendicular Ferromagnetic Phase in a Topological Insulator
- Conduction of spin currents through insulating oxides
- Amperean Pairing Instability in the U(1) Spin Liquid State with Fermi Surface and Application to
- Electric charging of magnetic textures on the surface of a topological insulator
- Anti-damping spin transfer torque through epitaxial Nickel oxide
- Emerging Weak Localization Effects on Topological Insulator-Insulating Ferromagnet (Bi_2Se_3-EuS) Interface
- Thin-Film Magnetization Dynamics on the Surface of a Topological Insulator
- Spin Transport in Antiferromagnetic Insulators Mediated by Magnetic Correlations
- Time-Reversal-Symmetry-Breaking Superconductivity in Epitaxial Bismuth/Nickel Bilayers
- Quantum oscillations and Berry's phase in topological insulator surface states with broken particle-hole symmetry
- Proximity Driven Enhanced Magnetic Order at Ferromagnetic Insulator / Magnetic Topological Insulator Interface
- Enhancing Magnetic Ordering in Cr-doped Bi2Se3 using High-TC Ferrimagnetic Insulator
- Magneto-optical conductivity in a topological insulator
- Electrostatically Controlled Magnetization Rotation in Ferromagnet-Topological Insulator Planar Structures
- Prospect for antiferromagnetic spintronics
- Amperean Pairing at the Surface of Topological Insulators
- Improved Domain Wall Dynamics and Magnonic Torques using Topological Insulators
- Domain Wall Motion in Thin-Film Magnets/ Topological Insulator Junctions
- Dirac electrons and domain walls: a realization in junctions of ferromagnets and topological insulators
- Observation of Anomalous Magnetic Moments in Superconducting Bi/Ni Bilayer
- Non-local topological magnetoelectric effect by Coulomb interaction at a topological insulator-ferromagnet interface
- Dielectric screening of surface states in a topological insulator
- Topological magnetic dipolar interaction and non-local electric magnetization control in topological insulator heterostructures
- Topological staggered field-electric effect with bipartite magnets
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- Magnons and fundamental magnetic interactions in a ferromagnetic monolayer: The case of Ni monolayer
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