Ferromagnetic state above room temperature in a proximitized topological Dirac semimetal

Abstract

We report an above-room-temperature ferromagnetic state realized in a proximitized Dirac semimetal, which is fabricated by growing typical Dirac semimetal Cd${}_3$As${}_2$ films on a ferromagnetic garnet with strong perpendicular magnetization. Observed anomalous Hall conductivity with substantially large Hall angles is found to be almost proportional to magnetization and opposite in sign to it. Theoretical calculations based on first-principles electronic structure also demonstrate that the Fermi-level dependent anomalous Hall conductivity reflects the Berry curvature originating in the split Weyl nodes. The present Dirac-semimetal/ferromagnetic-insulator heterostructure will provide a novel platform for exploring Weyl-node transport phenomena and spintronic functions lately proposed for topological semimetals.

arXiv comment15 pages, 4 figures

References in corpus (38)

• Topological Insulators
• Anomalous Hall effect
• Weyl and Dirac Semimetals in Three Dimensional Solids
• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
• Weyl Semimetal in a Topological Insulator Multilayer
• Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)
• Topological Materials: Weyl Semimetals
• Dirac semimetal in three dimensions
• Three Dimensional Dirac Semimetal and Quantum Transports in Cd3As2
• Ultrahigh mobility and giant magnetoresistance in the Dirac semimetal Cd${}_3$As${}_2$
• Observation of a topological 3D Dirac semimetal phase in high-mobility Cd3As2
• Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
• Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase
• Anomalous Hall Effect and Magnetic Monopoles in Momentum-Space
• Quantum Hall effects in a Weyl Semi-Metal: possible application in pyrochlore Iridates
• Large intrinsic anomalous Hall effect in half-metallic ferromagnet Co3Sn2S2 with magnetic Weyl fermions
• The chiral anomaly and thermopower of Weyl fermions in the half-Heusler GdPtBi
• Intrinsic vs. extrinsic anomalous Hall effect in ferromagnets
• Landau Quantization and Quasiparticle Interference in the Three-Dimensional Dirac Semimetal Cd3As2
• Transport evidence for Fermi-arc mediated chirality transfer in the Dirac semimetal Cd${}_3$As${}_2$
• Observation of superconductivity in 3D Dirac semimetal Cd3As2 crystal
• Theoretical prediction of magnetic and noncentrosymmetric Weyl fermion semimetal states in the R-Al-X family of compounds (R=rare earth, Al=aluminium, X=Si, Ge)
• Anomalous Hall effect in Weyl semimetal half Heusler compounds RPtBi (R = Gd and Nd)
• Tailoring Exchange Couplings in Magnetic Topological Insulator/Antiferromagnet Heterostructures
• Unconventional Superconductivity at Mesoscopic Point-contacts on the 3-Dimensional Dirac Semi-metal Cd${}_3$As${}_2$
• Above 400 K Robust Perpendicular Ferromagnetic Phase in a Topological Insulator
• Quantum Hall states observed in thin films of Dirac semimetal Cd3As2
• Independent tuning of electronic properties and induced ferromagnetism in topological insulators with heterostructure approach
• Magneto-optical signature of massless Kane electrons in Cd3As2
• From colossal to zero: Controlling the Anomalous Hall Effect in Magnetic Heusler Compounds via Berry Curvature Design
• Pseudo-electromagnetic fields in topological semimetals
• Enhancing Magnetic Ordering in Cr-doped Bi2Se3 using High-TC Ferrimagnetic Insulator
• Universal charge and current on magnetic domain walls in Weyl semimetals
• Quantized surface transport in topological Dirac semimetal films
• Direct observation of Landau level resonance and mass generation in Dirac semimetal Cd3As2 thin films
• Voltage-driven magnetization switching and spin pumping in Weyl semimetals
• Structural characterisation of high-mobility Cd3As2 films crystallised on SrTiO3

Cited by in corpus (11)

• Topological Hall effect in the antiferromagnetic Dirac semimetal EuAgAs
• Enhancement of spin-orbit coupling in Dirac semimetal Cd${}_3$As${}_2$ films by Sb-doping
• Doping-induced topological transition and enhancement of thermopower in the Dirac-semimetal system Cd${}_{3-x}$Zn${}_x$As${}_2$
• Long-range spin transport on the surface of topological Dirac semimetal
• Ferromagnetic-electrodes-induced Hall effect in topological Dirac semimetals
• Enhancement of the Thermoelectric Figure of Merit in the Dirac Semimetal Cd${}_3$As${}_2$ by Band-Structure and -Filling Control
• Constraints on proximity-induced ferromagnetism in a Dirac semimetal (Cd${}_3$As${}_2$)/ferromagnetic semiconductor (Ga${}_{1-x}$Mn${}_x$Sb) heterostructure
• Nodal lines and boundary modes in topological Dirac semimetals with magnetism
• Anomalous spin Josephson effect in spin superconductors
• Edge and bulk states in Weyl-orbit quantum Hall effect as studied by Corbino measurements
• Anisotropy of the spin Hall effect in a Dirac ferromagnet