Featured
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Article |
A correlated ferromagnetic polar metal by design
The authors report coexisting ferromagnetism, polar distortion and metallicity in quasi-two-dimensional Ca3Co3O8, providing a platform to exploit magnetoelectric coupling in a metallic system.
- Jianbing Zhang
- , Shengchun Shen
- & Pu Yu
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Article |
Angle-resolved transport non-reciprocity and spontaneous symmetry breaking in twisted trilayer graphene
Angle-resolved transport measurements on twisted trilayer graphene reveal evidence for a variety of correlated states with spontaneous symmetry breaking, and offer evidence of momentum polarization.
- Naiyuan James Zhang
- , Jiang-Xiazi Lin
- & J. I. A. Li
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News & Views |
All-electric writing of a chiral quantum memory
An all-electric switch of the persistent electron swirl in a quantum anomalous Hall state enables researchers to flip the electronic chirality of this quantum state.
- Philip J. W. Moll
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Article |
Electrical switching of the edge current chirality in quantum anomalous Hall insulators
Thermally assisted spin–orbit torque is used to switch the edge current chirality in mesoscopic quantum anomalous Hall devices.
- Wei Yuan
- , Ling-Jie Zhou
- & Cui-Zu Chang
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News & Views |
Highly anisotropic van der Waals magnetism
Ultrathin CrSBr, a two-dimensional magnet, has been shown to exhibit very rich magnetic behaviours, from an unexpected magnetic order to optical emissions coupled to its magnetic state. This material has great potential for use in ultra-compact spintronics devices.
- Ahmet Avsar
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Article |
Asynchronous current-induced switching of rare-earth and transition-metal sublattices in ferrimagnetic alloys
Asynchronous sublattice magnetization switching is found in a ferrimagnetic material and understood by considering the exchange coupling and alloy microstructure.
- Giacomo Sala
- , Charles-Henri Lambert
- & Pietro Gambardella
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Letter |
Ultrafast control of magnetic interactions via light-driven phonons
Non-thermal lattice control of exchange interactions allows for picosecond coherent switching between competing antiferromagnetic and weakly ferromagnetic order.
- D. Afanasiev
- , J. R. Hortensius
- & A. D. Caviglia
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News & Views |
Probing a mesoscopic elephant
Using resonant inelastic X-ray scattering, a new experimental window is opened on fundamental magnetic excitations in mesoscopic ferromagnets.
- Robert Stamps
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Article |
Tuning spin excitations in magnetic films by confinement
The thickness dependence of the dispersion of spin waves in mesoscopic iron films is measured and found to be renormalized in the out-of-plane direction as the thickness is reduced. The results are captured by a Heisenberg model that accounts for the confinement in the out-of-plane direction through the loss of Fe bonds.
- Jonathan Pelliciari
- , Sangjae Lee
- & Valentina Bisogni
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Article |
Observation of fluctuation-mediated picosecond nucleation of a topological phase
Time-resolved X-ray scattering is utilized to demonstrate an ultrafast 300 ps topological phase transition to a skyrmionic phase. This transition is enabled by the formation of a transient topological fluctuation state.
- Felix Büttner
- , Bastian Pfau
- & Stefan Eisebitt
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Review Article |
Emergent phenomena and proximity effects in two-dimensional magnets and heterostructures
This Review summarizes recent progress in exploring the intrinsic magnetism of atomically thin van der Waals materials, manipulation of their magnetism by tuning the interlayer coupling, and device structures for spin- and valleytronic applications.
- Bevin Huang
- , Michael A. McGuire
- & Xiaodong Xu
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Letter |
Magnetic proximity and nonreciprocal current switching in a monolayer WTe2 helical edge
The coupling between magnetism and topology is studied in a van der Waals heterostructure.
- Wenjin Zhao
- , Zaiyao Fei
- & David H. Cobden
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Article |
Multi-messenger nanoprobes of hidden magnetism in a strained manganite
A multi-messenger combination of atomic force microscopy, scanning near-field optical microscopy and magnetic force microscopy demonstrates a strain-modulated photoinduced ferromagnetic metallic state in La2/3Ca1/3MnO3.
- A. S. McLeod
- , Jingdi Zhang
- & D. N. Basov
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Letter |
Spin chirality fluctuation in two-dimensional ferromagnets with perpendicular magnetic anisotropy
Evidence for spin chirality fluctuations in two-dimensional ferromagnets is provided by magnetotransport measurements.
- Wenbo Wang
- , Matthew W. Daniels
- & Weida Wu
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Article |
Long-range chiral exchange interaction in synthetic antiferromagnets
An antisymmetric and chiral long range interlayer magnetic exchange interaction is measured, with implications for spintronics and chiral magnetic devices.
- Dong-Soo Han
- , Kyujoon Lee
- & Mathias Kläui
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News & Views |
Ferromagnetism in a topological semimetal
The van der Waals material Fe3–xGeTe2 is shown to be a strong candidate for a ferromagnetic nodal-line semimetal with a very large anomalous Hall effect.
- D. A. Pesin
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Letter |
Two-dimensional itinerant ferromagnetism in atomically thin Fe3GeTe2
Metallic ferromagnetism is reported in an exfoliated monolayer of the van der Waals material Fe3GeTe2.
- Zaiyao Fei
- , Bevin Huang
- & Xiaodong Xu
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Article |
Large anomalous Hall current induced by topological nodal lines in a ferromagnetic van der Waals semimetal
A combined experimental and theoretical approach identifies the van der Waals material Fe3GeTe2 as a candidate ferromagnetic nodal line semimetal. These results extend the connections between topology and magnetism.
- Kyoo Kim
- , Junho Seo
- & Jun Sung Kim
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News & Views |
Symmetry and magnetism allied
By transferring the symmetry conditions of electric polarization patterns to the field of magnetism, a particularly stable magnetic configuration is obtained that could be interesting for voltage-controlled magnetic devices.
- Manfred Fiebig
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News & Views |
At the flick of a switch
Voltage control of recently discovered two-dimensional magnets has been demonstrated, highlighting their potential for low-power data storage.
- Ajit Srivastava
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News & Views |
A ratchet made of tiny magnets
An artificial spin ice array exploits two-dimensional chirality to take a step towards technology.
- Steven T. Bramwell
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Letter |
Electric field control of deterministic current-induced magnetization switching in a hybrid ferromagnetic/ferroelectric structure
An electric field is shown to induce an in-plane effective magnetic field enabling the deterministic magnetization switching of a magnetic multilayer on a piezoelectric substrate.
- Kaiming Cai
- , Meiyin Yang
- & Kaiyou Wang
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News & Views |
Let's twist again
The magnetization in a chiral ferromagnetic fluid can be twisted and linked to form a stable three-dimensional topological soliton known as a hopfion.
- Paul Sutcliffe
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News & Views |
Controlling magnetism
Manipulation of the magnetic state in spin valve structures by superconductivity has now been achieved, opening a new route for the development of ultra-fast cryogenic memories.
- Alexander A. Golubov
- & Mikhail Yu. Kupriyanov
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Article |
Static three-dimensional topological solitons in fluid chiral ferromagnets and colloids
Three-dimensional topological solitons are realized in a fluid chiral ferromagnet formed by colloidal dispersions of magnetic nanoplates.
- Paul J. Ackerman
- & Ivan I. Smalyukh
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Letter |
Robust metastable skyrmions and their triangular–square lattice structural transition in a high-temperature chiral magnet
A room-temperature metastable skyrmion phase, which undergoes reversible transitions between a triangular and square lattice upon varying the temperature and magnetic field, is found in β-Mn-type Co8Zn8Mn4.
- K. Karube
- , J. S. White
- & Y. Taguchi
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Article |
Controlled lateral anisotropy in correlated manganite heterostructures by interface-engineered oxygen octahedral coupling
Strong oxygen octahedral coupling is found to transfer the octahedral rotation between NdGaO3 and La2/3Sr1/3MnO3, allowing manipulation of the heterostructures’ magnetic and electronic anisotropic properties by engineering the oxygen network.
- Z. Liao
- , M. Huijben
- & G. Rijnders
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News & Views |
A warm exchange
Molecular layers show antiferromagnetic ordering up to room temperature and are able to exchange bias a ferromagnetic electrode, demonstrating that molecules could be much more than a simple vehicle for transporting spin.
- Sandrine Heutz
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News & Views |
Tuning exchange bias
Exchange bias is a magnetic phenomenon that has facilitated the ever-increasing storage density of magnetic recording systems. The finding of high tunable exchange bias in certain Heusler alloys indicates new routes for the design of rare-earth-free hard magnetic materials.
- Per Nordblad
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News & Views |
Close-up on spin dynamics
Standing spin-waves can be excited in artificial chains of magnetic atoms using inelastic electron tunnelling spectroscopy, thereby offering a route to speed up the switching of their magnetization.
- Stanislas Rohart
- & Guillemin Rodary
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Letter |
Imaging of spin waves in atomically designed nanomagnets
The excitations that determine the low-temperature properties of ferromagnetic materials are called spin waves. Using a combination of inelastic electron tunnelling spectroscopy and numerical simulations, the spin waves occurring in a one-dimensional chain of iron atoms deposited on Cu2N are now imaged, and their dynamics examined.
- A. Spinelli
- , B. Bryant
- & A. F. Otte
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News & Views |
Three rules of design
By following three empirical rules it is possible to design and fabricate magnetic heterostructures or even devices whose magnetization can be controlled by means of circularly polarized femtosecond laser pulses, instead of applied magnetic fields.
- Alexey V. Kimel
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Correspondence |
Optical excitation of thin magnetic layers in multilayer structures
- A. R. Khorsand
- , M. Savoini
- & Th. Rasing
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Correspondence |
Reply to 'Optical excitation of thin magnetic layers in multilayer structures'
- A. Eschenlohr
- , M. Battiato
- & C. Stamm
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Article |
Landau theory of topological defects in multiferroic hexagonal manganites
Rare-earth hexagonal manganites are known for their multiferroic properties. Using parameters calculated from first principles, a theoretical description of the topological defects arising in these systems is now presented.
- Sergey Artyukhin
- , Kris T. Delaney
- & Maxim Mostovoy
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Article |
Highly sensitive nanoscale spin-torque diode
Spin-torque diodes enable the detection and rectification of radiofrequencies by means of spin-torque-induced ferromagnetic resonance between nanomagnets. Now, by using magnetic tunnel junctions with a MgO barrier and a FeB free-layer detection sensitivities in excess of those of semiconductor devices are demonstrated.
- S. Miwa
- , S. Ishibashi
- & Y. Suzuki
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Letter |
Current-driven dynamics of chiral ferromagnetic domain walls
Controlling the direction of propagation of domain walls in magnetic nanowires is essential for their use in proposed device applications. It is now shown that Dzyaloshinskii–Moriya interactions determine the chirality of domain walls in metallic ferromagnets placed between a heavy metal and an oxide, which in turn means the direction of propagation can be determined by choosing suitable material properties.
- Satoru Emori
- , Uwe Bauer
- & Geoffrey S. D. Beach
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Article |
Piezoelectric control of the mobility of a domain wall driven by adiabatic and non-adiabatic torques
Domain walls forming within magnetic nanowires offer a valuable degree of freedom with which to explore possible future information storage and processing architectures. By taking advantage of the piezoelectric characteristics of perpendicularly magnetized GaMnAsP/GaAs nanowires, large variations in the current-induced domain wall mobilities are obtained.
- E. De Ranieri
- , P. E. Roy
- & J. Wunderlich
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Letter |
Titanium dx y ferromagnetism at the LaAlO3/SrTiO3 interface
Results suggesting the onset of magnetism at the interface between LaAlO3 and SrTiO3 have been among the more intriguing associated with this system. Using element-specific techniques such as X-ray magnetic circular dichroism, direct signatures of in-plane ferromagnetic order occurring at the interface are now reported.
- J.-S. Lee
- , Y. W. Xie
- & C.-C. Kao
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Letter |
Ferroelectric-field-effect-enhanced electroresistance in metal/ferroelectric/semiconductor tunnel junctions
A ferroelectric tunnelling heterostructure is presented in which both the height and the width of the tunnelling barrier can be electrically modulated, leading to a greatly enhanced tunnelling electroresistance. In Pt/BaTiO3/Nb:SrTiO3 heterostructures, an ON/OFF conductance ratio that is about an order of magnitude greater than those reported in normal ferroelectric tunnelling junctions, is demonstrated at room temperature.
- Zheng Wen
- , Chen Li
- & Naiben Ming