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NEWSROOM


Graphene accelerates spin-charge transfer to boost valley polarization in 2D magnetic heterostructures
In this work, we report a method for controlling interlayer spin-charge transfer in WS2/CrBr3 heterostructure through the proximity coupling of graphene and achieve a giant chirality-dependent valley polarization splitting. The spin-charge transfer time between WS2 and CrBr3 in WS2/CrBr3 heterostructure is reduced from 17.3 ps to 1.3 ps when it is coupled with a few-layered graphene, while the maximum valley polarization and polarization splitting of trion excitons in WS2 are
Sep 83 min read


AI for materials needs to be more physics-aware
Michele Simoncelli’s group introduces a new benchmark to evaluate how well machine learning models for atomic interactions translate quantum characteristics into macroscopic physical properties
Sep 84 min read


3D magnetic field experiment at BESSY II takes spintronics a step further
This real-space ptychographic phase image of magnetic textures measured at an external magnetic field perpendicular to the sample. It shows a stripe pattern and skyrmions (in the very top part of the sample). © HZB (Fe0.63Ni0.3Pd0.07)3P or FNPP is a magnetic material that exhibits complex magnetic structures even at room temperature. This makes the material of interest for spintronics, a field that could enable data processing with significantly lower energy consumption. On
Sep 72 min read


Nanoscale multiferroic materials open the path to efficient magnetic memory technology
Electric field–induced ferromagnetic domain change by ferroelectric topological domain switching in Co-substituted BiFeO3 nanodots Electric fields can reliably reverse magnetization in nanoscale structures of the multiferroic material BiFe0.9Co0.1O3 (BFCO), as reported by researchers from Science Tokyo. Multiferroic materials display coupled electric and magnetic order, making them attractive for low-power memory devices. The team fabricated 190 nm BFCO nanodots and used adva
Sep 33 min read


First switchable graphene nanoribbon that twists on demand
Four-ring helicene units were too unstable to control, so chemists had written them off for chiral materials. Scientists found a way to lock them into place and then switch their twist with a natural solvent. Researchers at Nagoya University have built a graphene nanoribbon that can switch which way it twists using a natural solvent. Graphene nanoribbons are thin ribbon-shaped structures made of fused carbon rings. Twisted or helical versions of these ribbons show promise for
Sep 34 min read


New holographic printer makes 3D shapes—voids and all—in one shot
Researchers at the University of Utah and the University of Texas at Austin have developed a holographic 3D printing method that forms complete objects in a single laser exposure. A nanopatterned mask diffracts the beam into a volumetric intensity pattern that crosslinks a specially formulated resin only in the intended solid regions. Because exposure occurs much faster than curing, computationally designed masks can keep selected volumes dark enough to remain hollow. The app
Aug 213 min read
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