Emerging Weak Localization Effects on Topological Insulator-Insulating Ferromagnet (Bi_2Se_3-EuS) Interface

Abstract

Thin films of topological insulator Bi_2Se_3 were deposited directly on insulating ferromagnetic EuS. Unusual negative magnetoresistance was observed near the zero field below the Curie temperature (T_C), resembling the weak localization effect; whereas the usual positive magnetoresistance was recovered above T_C. Such negative magnetoresistance was only observed for Bi_2Se_3 layers thinner than t~4nm, when its top and bottom surfaces are coupled. These results provide evidence for a proximity effect between a topological insulator and an insulating ferromagnet, laying the foundation for future realization of the half-integer quantized anomalous Hall effect in three-dimensional topological insulators.

4 figures

References in corpus (7)

• Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• Impurity effect on weak anti-localization in the topological insulator Bi2Te3
• Topological Surface States and Dirac point tuning in ternary Bi2Te2Se class of topological insulators
• Weak Localization and Antilocalization in Topological Insulator Thin Films with Coherent Bulk-Surface Coupling
• Modified Sagnac interferometer for high-sensitivity magneto-optic measurements atcryogenic temperatures
• Magnetic Field Dependence of Dephasing Rate due to Diluted Kondo Impurities

Cited by in corpus (55)

• Interface-Induced Phenomena in Magnetism
• Finite-temperature conductivity and magnetoconductivity of topological insulators
• Large anomalous Hall effect in ferromagnetic insulator-topological insulator heterostructures
• Quantum anomalous Hall effect driven by magnetic proximity coupling in all-telluride based heterostructure
• Direct measurement of proximity-induced magnetism at the interface between a topological insulator and a ferromagnet
• Large Anomalous Hall Effect in Topological Insulators with Proximitized Ferromagnetic Insulators
• Quantum Anomalous Hall Effect in Time-Reversal-Symmetry Breaking Topological Insulators
• Enhancing Magnetic Ordering in Cr-doped Bi2Se3 using High-TC Ferrimagnetic Insulator
• Weak localization and weak anti-localization in topological insulators
• Magnetic Proximity Effect and Interlayer Exchange Coupling of Ferromagnetic/Topological Insulator/Ferromagnetic Trilayer
• Magnetic proximity effect at Bi${}_2$Se${}_3$/EuS interface with broken inversion symmetry
• Interface induced states at the boundary between a 3D topological insulator Bi${}_2$Se${}_3$ and a ferromagnetic insulator EuS
• Tailoring Hybrid Anomalous Hall Response in Engineered Magnetic Topological Insulator Heterostructures
• Proximity effect between a topological insulator and a magnetic insulator with large perpendicular anisotropy
• Changes of Magnetism in a Magnetic Insulator due to Proximity to a Topological Insulator
• Weak Localization and Antilocalization in Topological Materials with Impurity Spin-Orbit Interactions
• Evidence for exchange Dirac gap in magneto-transport of topological insulator-magnetic insulator heterostructures
• Optical evidence of blue shift in topological insulator bismuth selenide in the few-layer limit
• Inducing magnetism onto the surface of a topological crystalline insulator
• Fluctuation-induced torque on a topological insulator out of thermal equilibrium
• Breaking time reversal symmetry in topological insulators
• Magnon-mediated superconductivity on the surface of a topological insulator
• Spin diffusion and magnetoresistance in ferromagnet/topological-insulator junctions
• Do topology and ferromagnetism cooperate at the EuS/Bi${}_2$Se${}_3$ interface?
• Engineering the breaking of time-reversal symmetry in gate-tunable hybrid ferromagnet/topological insulator heterostructures
• Recent advancements in the study of intrinsic magnetic topological insulators and magnetic Weyl semimetals
• Towards the manipulation of topological states of matter: A perspective from electron transport
• Magnon-induced superconductivity in a topological insulator coupled to ferro- and antiferromagnetic insulators
• Quantum Transport in Weyl Semimetal Thin Films in the Presence of Spin-Orbit Coupled Impurities
• Realization of the Chern insulator and Axion insulator phases in antiferromagnetic $MnTe$-$B{i}_2(Se,Te{)}_3$-$MnTe$ heterostructures
• Crossover Between Weak Antilocalization and Weak Localization and Electron-Electron Interaction in Few-Layer WTe${}_2$
• Absence of Magnetic Fluctuations in the Ferromagnetic/Topological Heterostructure EuS/Bi${}_2$Se${}_3$
• Observation of chiral currents at the magnetic domain boundary of a topological insulator
• Electric coupling in scanning SQUID measurements
• Magnetic proximity effect of a topological insulator and a ferromagnet in thin film bilayers of $BiSbT{e}_3$ and $SrRu{O}_3$
• Fluctuation-induced Néel and Bloch skyrmions at topological insulator surfaces
• Pulsed Laser Deposition of High-Quality Thin Films of the Insulating Ferromagnet EuS
• Two-Stage Proximity-Induced Gap-Opening in Topological Insulator - Insulating Ferromagnet (Bi${}_x$Sb${}_{1-x}$)${}_2$Te${}_3$ - EuS Bilayers
• Robust Gapless Surface State against Surface Magnetic Impurities on (Bi${}_{0.5}$Sb${}_{0.5}$)${}_2$Te${}_3$ Evidenced by In Situ Magnetotransport Measurements
• In-depth Analysis of Anisotropic Magnetoconductance in Bi${}_2$Se${}_3$ thin films with electron-electron interaction corrections
• Interface electronic structure at the topological insulator - ferrimagnetic insulator junction
• Manipulating Spin-Lattice Coupling in Layered Magnetic Topological Insulator Heterostructure $via$ Interface Engineering
• Thermal screening at finite chemical potential on a topological surface and its interplay with proximity-induced ferromagnetism
• Weakly damped acoustic plasmon mode in transition metal dichalcogenides with Zeeman splitting
• Finite temperature fluctuation-induced order and responses in magnetic topological insulators
• Topological magnetic dipolar interaction and non-local electric magnetization control in topological insulator heterostructures
• From classical to quantum regime of topological surface states via defect engineering
• Topological staggered field-electric effect with bipartite magnets
• The anomalous Hall Effect in a Magnetically Extended Topological Insulator Heterostructure
• Discovery of a high-temperature antiferromagnetic state and transport signatures of exchange interactions in a Bi2Se3/EuSe heterostructure
• Carrier Density and Thickness Dependent Proximity Effect in Doped Topological Insulator -- Metallic Ferromagnet Bilayers
• Pressure-induced shift of effective Ce valence, Fermi energy and phase boundaries in CeOs${}_4$Sb${}_{12}$
• Photo-induced Non-collinear Interlayer RKKY Coupling in Bulk Rashba Semiconductors
• Sb doping effect on transport behavior in the topological insulator Bi2Se3
• Weak localization effect in topological insulator micro flakes grown on insulating ferrimagnet BaFe12O19