Magnet

Researchers control quantum states with spin-polarized currents

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Researchers at ETH Zurich have achieved a significant breakthrough in quantum physics by demonstrating that quantum states of single electron spins can be controlled using spin-polarized electron currents. This pioneering method holds potential for future applications in electronic circuit elements, potentially revolutionizing data storage and processing. The Spin of Electrons Electrons possess an intrinsic angular … Read more

Study reveals unexpected magnon transport in antiferromagnets for quantum information processing

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The spin of the electron is nature’s perfect quantum bit, capable of extending the range of information storage beyond “one” or “zero.” Exploiting the electron’s spin degree of freedom (possible spin states) is a central goal of quantum information science. Recent progress by Lawrence Berkeley National Laboratory (Berkeley Lab) researchers Joseph Orenstein, Yue Sun, Jie … Read more

Scientists unlock the secrets of supermagnets

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The National Institute for Materials Science (NIMS) has harnessed the power of advanced simulations to unravel the magnetization reversal process in Nd-Fe-B magnets. By constructing large-scale finite element models based on tomographic data obtained through electron microscopy, researchers have gained unprecedented insights into the microstructural factors influencing coercivity – a key measure of a magnet’s … Read more

Physicists achieve 50x more precise measurement of crucial value for neutrino mass

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What is the mass of a neutrino at rest? This is one of the big unanswered questions in physics. Neutrinos play a central role in nature. A team led by Klaus Blaum, Director at the Max Planck Institute for Nuclear Physics in Heidelberg, has now made an important contribution in “weighing” neutrinos as part of … Read more

Scientists achieve current-driven antiskyrmion motion at room temperature

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Prof. Zhang Ying’s group from the Institute of Physics of the Chinese Academy of Sciences (CAS), in collaboration with domestic universities and the Los Alamos National Laboratory in the United States, has experimentally observed current-driven antiskyrmion sliding. Their work was published in Nature Materials on April 11. Magnetic (anti)skyrmions with topologically protected spin structures are promising as next-generation information … Read more

Artificial solid with switchable interactions exhibits topological effects in transport

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In principle, one shouldn’t compare apples to oranges. However, in topology, which is a branch of mathematics, one must do just that. Apples and oranges, it turns out, are said to be topologically the same since they both lack a hole—in contrast to doughnuts or coffee cups, for instance, which both have one (the handle … Read more

Study links surface roughness to performance in superconducting radiofrequency cavities

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With every new particle accelerator built for research, scientists have an opportunity to push the limits of discovery. But this is only true if new particle accelerators deliver the desired performance—no small feat in a world where each new machine is a first of its particular kind. At each project opportunity, researchers try to refine … Read more

Brain abnormalities identified in scoliosis patients: Singapore study

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Heavy school bags, poor posture, one-handed sports are often blamed for the development of curved spine in teens. Known as adolescent idiopathic scoliosis (AIS), it affects those aged 10 to 19 but has no known cause. A team from Singapore General Hospital (SGH) and National Neuroscience Institute (NNI) has now discovered that the answer to … Read more

The Total Solar Eclipse of April 8, 2024

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Location State/Country Maximum Duration of Totality Mazatlán Mexico 3 minutes 50 seconds San Antonio Texas 3 minutes 38 seconds Dallas Texas 3 minutes 25 seconds Little Rock Arkansas 3 minutes 22 seconds St. Louis Missouri 3 minutes 12 seconds Indianapolis Indiana 3 minutes 25 seconds Toledo Ohio 3 minutes 16 seconds Cleveland Ohio 3 minutes … Read more

Quantum Mechanics: Mysteries of the Subatomic World

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Quantum mechanics is one of the most profound and revolutionary theories in modern physics, unraveling the mysteries of the subatomic world and fundamentally transforming our understanding of matter, energy, and the fundamental forces of nature. Developed in the early 20th century through the works of pioneering physicists such as Max Planck, Albert Einstein, Niels Bohr, … Read more

Black Holes: Gravity’s Mysterious Endpoints

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Black holes are among the most intriguing and enigmatic objects in the universe, representing the mysterious endpoints of gravity’s relentless pull. These cosmic entities, born from the collapse of massive stars or through other astrophysical processes, possess such intense gravitational fields that not even light can escape their grasp. The concept of a black hole … Read more

Physicists discover novel “hybrid topology” in elemental arsenic crystal

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Physicists have observed a novel quantum effect termed “hybrid topology” in a crystalline material. This finding opens up a new range of possibilities for the development of efficient materials and technologies for next-generation quantum science and engineering. The finding, published in Nature, came when Princeton scientists discovered that an elemental solid crystal made of arsenic … Read more

Researchers develop power-free levitation platform using graphite for sensor applications

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Researchers at the Quantum Machines Unit at the Okinawa Institute of Science and Technology (OIST) are studying levitating materials—substances that can remain suspended in a stable position without any physical contact or mechanical support. The most common type of levitation occurs through magnetic fields. Objects such as superconductors or diamagnetic materials (materials repelled by a … Read more

BREAD experiment takes a bite out of dark matter mystery

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One of the great mysteries of modern science is dark matter. We know dark matter exists thanks to its effects on other objects in the cosmos, but we have never been able to directly see it. And it’s no minor thing—currently, scientists think it makes up about 85% of all the mass in the universe. … Read more

Researchers detect first experimental evidence of quantum barkhausen noise

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Iron screws and other so-called ferromagnetic materials are made up of atoms with electrons that act like little magnets. Normally, the orientations of the magnets are aligned within one region of the material but are not aligned from one region to the next. Think of packs of tourists in Times Square pointing to different billboards … Read more

Experimental evidence of parity anomaly in topological insulator material

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Experimental and theoretical physicists from the Würzburg Institute for Topological Insulators have observed a re-entrant quantum Hall effect in a mercury telluride device and have identified it as a signature of parity anomaly. Topological insulators are materials that can conduct electricity, but only on their surface or edges. No current flows inside them. They are … Read more

Researchers develop skyrmion-based microdevice for energy-efficient AI computing

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In a remarkable collaboration between the Agency for Science, Technology and Research (A*STAR) and the National University of Singapore (NUS), a groundbreaking microelectronic device has emerged, heralding a new era in computing efficiency and sustainability. This innovative device, poised to revolutionize computing technologies, harnesses the power of tiny yet potent magnetic whirls known as skyrmions, … Read more

Thermoelectric effect reveals full picture of superconducting fluctuations

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Weak fluctuations in superconductivity, a precursor phenomenon to superconductivity, have been successfully detected by a research group at the Tokyo Institute of Technology (Tokyo Tech). This breakthrough was achieved by measuring the thermoelectric effect in superconductors over a wide range of magnetic fields and over a wide range of temperatures, from much higher than the superconducting transition … Read more

Helical magnets proposed for high-density, non-volatile memory devices

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In a groundbreaking development poised to transform the landscape of information storage, a team of researchers has unveiled a novel concept for magnet-based memory devices. This innovation, detailed in a recent publication in Nature Communications on March 7, 2024, promises to revolutionize the field with its potential for large-scale integration, non-volatility, and unparalleled durability. At … Read more

Pair distribution function technique unravels hidden electronic state in 1T-TaS2

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Research often unfolds as a multistage process. The solution to one question can spark several more, inspiring scientists to reach further and look at the larger problem from several different perspectives. Such projects can often be the catalyst for collaborations that leverage the expertise and capabilities of different teams and institutions as they grow. For … Read more