Topic
Spintronics studies electron spin and spin textures in magnetic materials, including domains and multilayer stacks, for data storage and computing.
Calculations by Xiong and Jia show a graphene-MnPS3 stack switching between altermagnetic and ferrimagnetic states across a 28 meV/f.u. sliding barrier. Under out-of-plane pressure the computed spin splitting reaches 72.2 meV and 80.2 meV in the two phases.
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Waseda University physicists simulated an optical skyrmion beam pushing one magnetic skyrmion into three distinct kinds of motion. The work is micromagnetic simulation on a thin magnetic layer, and the source describes no laboratory test.
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NUS-led researchers doped iron into nonmagnetic PtSe2 and used a gate voltage to tune its six-layer Neel temperature from about 25 K to 55 K. Order strengthens as carrier concentration falls, so a gate gives direct control in an air-stable 2D film.
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Rice physicists led by Pengcheng Dai find spins in YbMnBi2 favouring some directions from about 400 K, though magnetic order only sets in at 290 K. The team proposes this 'spin nematic' state is why the compound deflects charge and heat currents so strongly in a magnetic field.
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UT Dallas and Harvard physicists report in Nature a twisted superlattice in uranium oxytelluride, a compound known since the 1960s. Its mix of ferromagnetic and antiferromagnetic traits might one day help memory devices, if those advantages can be harnessed.
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Institute of Science Tokyo chemists used light at 90 degrees to show that a helicity-dependent photocurrent in 2D perovskites comes from the crystal bulk. Mirror-image crystals reportedly send the current the other way, so molecular handedness can set its direction.
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Ritsumeikan chemists led by Hiromitsu Maeda found three nonplanar counteranions stack copper thiaporphyrin cations into antiferromagnetic dimers. Every salt holds the same copper core, so the coupling follows the packing that the choice of anion sets.
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UCF physicists led by Madhab Neupane report signatures of altermagnetism in Co1/4TaSe2, a layered crystal containing magnetic cobalt atoms. The evidence is surface maps of its electron bands, so device builders get a well-characterized test material whose spin currents still need measuring.
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A Gothenburg and HZB team filmed magnetization dynamics inside a CoFeB spin Hall nano-oscillator at BESSY II. Simulations matched the movies only after grain boundaries, weakened anisotropy and the Dzyaloshinskii-Moriya interaction were added.
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A DGIST group passed current through a platinum, IrMn3 and CoGd stack and moved the temperature where the two magnetizations cancel, by 70 K in one film and 110 K in another, with the alloy composition left alone.
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A University of Maryland group stacked ferroelectric CuInP2S6 on ferromagnetic Fe3GaTe2 and used small voltages to move the magnet between two coercivity states that held after the voltage was switched off, at 292 kelvin.
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An international team including the University of Edinburgh set synaptic weights in Fe3GaTe2 by turning a whole skyrmion lattice into stripes, with no cooling. The 0.66 picojoule energy figure is a projection.
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Nagoya chemists fused [4]helicene units, long dismissed as too unstable, into a ribbon that takes its handedness from the beta-pinene it is dissolved in, strongest at -90C and lost as soon as the solvent goes.
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Rice, Minnesota and Paul Scherrer researchers report spin textures consistent with unconventional magnetism in ruthenium dioxide films a few atomic layers thick, and only when the lattice is strained, which makes strain a candidate control knob.
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Rice researchers report that uniaxial strain shrinks both the residual moment and the anomalous Hall voltage in hexagonal FeS, while the underlying magnetic order sits still.
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A Physical Review X paper reports that stretching hexagonal manganese telluride merges its magnetic domains and reverses the sign of its anomalous Hall voltage, leaving the magnetic order intact.
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A Chinese team reports 15.7 nT per root hertz at 1 Hz from a 400-square-micrometer die. The submarine headline is borrowed; the sourcing and threat-model questions are not.
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