Antiferromagnetism ≈ Antiferromagnetism
View article: Antiferromagnetic spintronics
Antiferromagnetic spintronics Open
Antiferromagnetic materials could represent the future of spintronic applications thanks to the numerous interesting features they combine: they are robust against perturbation due to magnetic fields, produce no stray fields, display ultra…
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Quantum anomalous Hall effect in intrinsic magnetic topological insulator MnBi <sub>2</sub> Te <sub>4</sub> Open
Quantum anomalous Hall goes intrinsic Quantum anomalous Hall effect—the appearance of quantized Hall conductance at zero magnetic field—has been observed in thin films of the topological insulator Bi 2 Se 3 doped with magnetic atoms. The d…
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Electrical switching of an antiferromagnet Open
Manipulating a stubborn magnet Spintronics is an alternative to conventional electronics, based on using the electron's spin rather than its charge. Spintronic devices, such as magnetic memory, have traditionally used ferromagnetic materia…
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Giant tunneling magnetoresistance in spin-filter van der Waals heterostructures Open
An intrinsic magnetic tunnel junction An electrical current running through two stacked magnetic layers is larger if their magnetizations point in the same direction than if they point in opposite directions. These so-called magnetic tunne…
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Ising-Type Magnetic Ordering in Atomically Thin FePS<sub>3</sub> Open
Magnetism in two-dimensional materials is not only of fundamental scientific interest but also a promising candidate for numerous applications. However, studies so far, especially the experimental ones, have been mostly limited to the magn…
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Probing magnetism in 2D van der Waals crystalline insulators via electron tunneling Open
An intrinsic magnetic tunnel junction An electrical current running through two stacked magnetic layers is larger if their magnetizations point in the same direction than if they point in opposite directions. These so-called magnetic tunne…
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Large anomalous Hall effect driven by a nonvanishing Berry curvature in the noncolinear antiferromagnet Mn <sub>3</sub> Ge Open
A large anomalous Hall effect is observed in the triangular antiferromagnet Mn 3 Ge arising from an intrinsic electronic Berry phase.
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Experimental Realization of an Intrinsic Magnetic Topological Insulator<sup>*</sup> Open
An intrinsic magnetic topological insulator (TI) is a stoichiometric magnetic compound possessing both inherent magnetic order and topological electronic states. Such a material can provide a shortcut to various novel topological quantum e…
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Static and Dynamical Properties of Antiferromagnetic Skyrmions in the Presence of Applied Current and Temperature Open
Skyrmions are topologically protected entities in magnetic materials which have the potential to be used in spintronics for information storage and processing. However, Skyrmions in ferromagnets have some intrinsic difficulties which must …
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<i>Colloquium</i>: Herbertsmithite and the search for the quantum spin liquid Open
Quantum spin liquids form a novel class of matter where, despite the existence of strong exchange interactions, spins do not order down to the lowest measured temperature. Typically, these occur in lattices that act to frustrate the appear…
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First-principles design of spintronics materials Open
Spintronics is one of the most promising next generation information technology, which uses the spins of electrons as information carriers and possesses potential advantages of speeding up data processing, high circuit integration density,…
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Suppression of magnetic ordering in XXZ-type antiferromagnetic monolayer NiPS3 Open
How a certain ground state of complex physical systems emerges, especially in two-dimensional materials, is a fundamental question in condensed-matter physics. A particularly interesting case is systems belonging to the class of XY Hamilto…
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Efficient Electrical Spin Splitter Based on Nonrelativistic Collinear Antiferromagnetism Open
Spin-current generation by electrical means is among the core phenomena driving the field of spintronics. Using ab initio calculations we show that a room-temperature metallic collinear antiferromagnet RuO_{2} allows for highly efficient s…
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Topological Weyl semimetals in the chiral antiferromagnetic materials Mn<sub>3</sub>Ge and Mn<sub>3</sub>Sn Open
Recent experiments revealed that Mn3Sn and Mn3Ge exhibit a strong anomalous\nHall effect at room temperature, provoking us to explore their electronic\nstructures for topological properties. By ab initio band structure\ncalculations, we ha…
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Heusler alloys for spintronic devices: review on recent development and future perspectives Open
Heusler alloys are theoretically predicted to become half-metals at room temperature (RT). The advantages of using these alloys are good lattice matching with major substrates, high Curie temperature above RT and intermetallic controllabil…
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Magnetic Order and Symmetry in the 2D Semiconductor CrSBr Open
The advent of two-dimensional (2D) magnets offers unprecedented control over electrons and spins. A key factor in determining exchange coupling and magnetic order is symmetry. Here, we apply second harmonic generation (SHG) to probe a 2D m…
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Atomically Thin CrCl<sub>3</sub>: An In-Plane Layered Antiferromagnetic Insulator Open
The recent discovery of magnetism in atomically thin layers of van der Waals (vdW) crystals has created new opportunities for exploring magnetic phenomena in the two-dimensional (2D) limit. In most 2D magnets studied to date, the c-axis is…
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Observation of spatial charge and spin correlations in the 2D Fermi-Hubbard model Open
Strong electron correlations lie at the origin of high-temperature superconductivity. Its essence is believed to be captured by the Fermi-Hubbard model of repulsively interacting fermions on a lattice. Here we report on the site-resolved o…
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Site-resolved measurement of the spin-correlation function in the Fermi-Hubbard model Open
Exotic phases of matter can emerge from strong correlations in quantum many-body systems. Quantum gas microscopy affords the opportunity to study these correlations with unprecedented detail. Here, we report site-resolved observations of a…
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Antiferromagnetic Spin Seebeck Effect Open
We report on the observation of the spin Seebeck effect in antiferromagnetic\nMnF$_2$. A device scale on-chip heater is deposited on a bilayer of Pt (4\nnm)/MnF$_2$ (110) (30 nm) grown by molecular beam epitaxy on a MgF$_2$ (110)\nsubstrat…
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Terahertz electrical writing speed in an antiferromagnetic memory Open
We demonstrate terahertz electrical writing speed in an antiferromagnetic memory at an energy of the gigahertz speed writing.
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Evolution of interlayer and intralayer magnetism in three atomically thin chromium trihalides Open
Significance Two-dimensional magnetic semiconductors such as CrI 3 are a new class of van der Waals material that may allow for the development of novel 2D spintronic devices. While strong magnetic anisotropy within the CrI 3 layers stabil…
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Cluster multipole theory for anomalous Hall effect in antiferromagnets Open
We introduce a cluster extension of multipole moments to discuss the\nanomalous Hall effect (AHE) in both ferromagnetic (FM) and antiferromagnetic\n(AFM) states in a unified framework. We first derive general symmetry\nrequirements for the…
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Ubiquitous signatures of nematic quantum criticality in optimally doped Fe-based superconductors Open
Discerning the nematic connection The phase diagram of any given family of iron-based superconductors is complicated: Superconductivity competes with antiferromagnetism, with a structural transition often thrown in for good measure. Transp…
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Antidamping-Torque-Induced Switching in Biaxial Antiferromagnetic Insulators Open
We investigate the current-induced switching of the Neel order in NiO(001)/Pt\nheterostructures,which is manifested electrically via the spin Hall\nmagnetoresistance. Significant reversible changes in the longitudinal and\ntransverse resis…
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Giant and Tunneling Magnetoresistance in Unconventional Collinear Antiferromagnets with Nonrelativistic Spin-Momentum Coupling Open
Giant and tunneling magnetoresistance are physical phenomena used for reading information in commercial spintronic devices. The effects rely on a conserved spin current passing between a reference and a sensing ferromagnetic electrode in a…
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Exfoliation and Raman Spectroscopic Fingerprint of Few-Layer NiPS3 Van der Waals Crystals Open
The range of mechanically cleavable Van der Waals crystals covers materials with diverse physical and chemical properties. However, very few of these materials exhibit magnetism or magnetic order, and thus the provision of cleavable magnet…
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Terahertz Antiferromagnetic Spin Hall Nano-Oscillator Open
We consider the current-induced dynamics of insulating antiferromagnets in a spin Hall geometry. Sufficiently large in-plane currents perpendicular to the Néel order trigger spontaneous oscillations at frequencies between the acoustic and …
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Direct visualization of magnetic domains and moiré magnetism in twisted 2D magnets Open
Imaging twisty magnets Twisting monolayers of graphene with respect to each other has led to a number of unusual correlated states. This approach has inspired researchers to try their hand at twisting two-dimensional (2D) magnets, but such…
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Spin-Polarized Current in Noncollinear Antiferromagnets Open
Noncollinear antiferromagnets, such as Mn_{3}Sn and Mn_{3}Ir, were recently shown to be analogous to ferromagnets in that they have a large anomalous Hall effect. Here we show that these materials are similar to ferromagnets in another asp…