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Researchers report that BiFeO₃’s cycloidal spin structure produces p-wave spin polarization at room temperature and that the circular photogalvanic current can be reversed by electric-field pulses. The work combines theory, magnetic imaging and optical-current measurements.
The four-year projects address rodent management and area-wide monitoring of grape diseases.
First-principles calculations screened 972 possible C-B structures in selected chiral space groups and identified six stable candidates. For one structure, the study estimates a 31.1 K superconducting transition using the McMillan formula; it does not report synthesis of the materials.
Researchers at JD.com and Beijing University of Posts and Telecommunications developed CompileMask, a compiler that connects flexible attention masks to efficient GPU kernels. Blackwell GPU experiments measured higher throughput than Flex-FA4 for several mask patterns.
Researchers at the University of Southampton developed a diffusion model that predicts a distribution of possible outcomes for micro- and nanostructures milled by focused ion beam, rather than a single result. It was trained on 100 paired designs and scanning-electron-microscope images.
Researchers at the Technical University of Munich developed Ember, a memory manager that tracks which data should remain on a GPU when its memory fills. In the paper’s data-intensive workloads, it reported higher speeds than standard Unified Virtual Memory on three NVIDIA GPUs.
Researchers at KTH Royal Institute of Technology introduced GraphTok, a system that tokenizes large language model requests on a GPU. In a Dynamo frontend experiment, a real H100 NVL performed tokenization while backend GPU workers were simulated.
Researchers grew stoichiometric hexagonal TiAs single crystals by chemical vapour transport and combined spectroscopy, ARPES, transport measurements and calculations. Four Raman-active vibrational modes were observed, while calculations indicated symmetry-protected topological band crossings.
Three planting methods and crop mixes now have a 15 October cutoff, five days later than the original date.
An experimental and theoretical study found Ni/Ru and Mn/Ga site mixing in the quaternary Heusler alloy NiRuMnGa and magnetic irreversibility near 48 K. The authors report ac susceptibility, magnetic relaxation and memory measurements as evidence supporting a cluster-glass state.
Researchers affiliated with Hong Kong Polytechnic University and other institutions in China modeled optical circuit switching alongside network scheduling to shift AI data-center training toward renewable-energy windows. In a controlled five-center scenario, modeled grid-purchase cost was 12.50% lower and local renewable-energy use rose by 2.724 percentage points.
Researchers compared monolayer, bilayer and trilayer regions of WS₂ in one specimen using electron ptychography. The measured phase of tungsten columns rose about 13.2% from one to two layers, but only 4.7% from two to three.
