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Otago study aids understanding of invisible but mighty particles

Tiny charged electrons and protons which can damage satellites and alter the ozone have revealed some of their mysteries to University of Otago scientists. ....

Aaron Hendry , Geophysical Research Letters , University Of Otago , Department Of Physics , Chemistry Physics Materials Sciences , Atomic Molecular Particle Physics , Climate Change , ஆரோன் ஹென்ட்ரி , புவி இயற்பியல் ஆராய்ச்சி எழுத்துக்கள் , பல்கலைக்கழகம் ஆஃப் ஆடாகொ , துறை ஆஃப் இயற்பியல் , வேதியியல் இயற்பியல் பொருட்கள் அறிவியல் ,

Odd angles make for strong spin-spin coupling

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IMAGE: A Rice University-led study finds a unique form of tunable and ultrastrong spin-spin interactions in orthoferrites under a strong magnetic field. The discovery has implications for quantum simulation and sensing..
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Credit: Illustration by Motoaki Bamba/Kyoto University
HOUSTON - (May 25, 2021) - Sometimes things are a little out of whack, and it turns out to be exactly what you need.
That was the case when orthoferrite crystals turned up at a Rice University laboratory slightly misaligned. Those crystals inadvertently became the basis of a discovery that should resonate with researchers studying spintronics-based quantum technology.
Rice physicist Junichiro Kono, alumnus Takuma Makihara and their collaborators found an orthoferrite material, in this case yttrium iron oxide, placed in a high magnetic field showed uniquely tunable, ultrastrong interactions between magnons in the crystal. ....

Xinwei Li , United States , Rice University , Shixun Cao , Timothy Noe , Karlf Hasselmann , Zwei Ren , Zuanming Jin , Motoaki Bamba , Xiaoxuan Ma , Kenji Hayashida , Jun Takeda , Ikufumi Katayama , Takuma Makihara , Guohong Ma , Junichiro Kono , Nicolas Peraca , Dmitri Turchinovich , Nature Communications , National Science Foundation , Technology Agency , University Of Shanghai , Motoaki Bamba Kyoto University , Army Research Office , Baker Institute For Public , Wiess School Of Natural Sciences ,

"Bite" defects in bottom-up graphene nanoribbons | EurekAlert! Science News

Scientists at Empa and EPFL have identified a new type of defect as the most common source of disorder in on-surface synthesized graphene nanoribbons, a novel class of carbon-based materials that may prove extremely useful in next-generation electronic devices. The researchers identified the atomic structure of these so-called bite defects and investigated their effect on quantum electronic transport. These kinds of defective zigzag-edged nanoribbons may provide suitable platforms for certain applications in spintronics. ....

Gnrs Zgnrs , Gabriela Borin Barin , Roman Fasel , Oleg Yazyev , Computational Condensed Matter Physics , Physical Chemistry Letters , Chemistry Physics Materials Sciences , Atomic Molecular Particle Physics , Superconductors Semiconductors , Electrical Engineering Electronics , கணக்கீட்டு அமுக்கப்பட்ட விஷயம் இயற்பியல் , உடல் வேதியியல் எழுத்துக்கள் , வேதியியல் இயற்பியல் பொருட்கள் அறிவியல் ,

Making the invisible visible

Researchers from University Jena, the University of California Berkeley and the Institut Polytechnique de Paris use intense laser light in the XUV spectrum to generate second harmonics on a laboratory scale. As the team writes in Science Advances, they were able to achieve this effect for the first time with a laser source on a laboratory scale and thus investigate the surface of a titanium sample down to the atomic level. ....

United States , Optique Appliquee , Christian Spielmann , Tobias Helk , University Of California , Quantum Electronics , Quantum Electronics Of Friedrich Schiller University Jena , University Of Jena , Friedrich Schiller University Jena , Institute Of Optics , Science Advances , Chemistry Physics Materials Sciences , Atomic Molecular Particle Physics , Nuclear Physics , ஒன்றுபட்டது மாநிலங்களில் , கிறிஸ்துவர் ஸ்பீல்மேன் , பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா , குவாண்டம் மின்னணுவியல் , பல்கலைக்கழகம் ஆஃப் ஜீனா , பிரீட்ரிச் ஷில்லர் பல்கலைக்கழகம் ஜீனா , நிறுவனம் ஆஃப் ஒளியியல் , வேதியியல் இயற்பியல் பொருட்கள் அறிவியல் ,

We know the cost of free choice and locality - in physics and not only

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IMAGE: Artistic imagery about the famous Bell experiments, with ballet dancers personifying experimental arrangements in space-time separated labs. The strings of ones and zeros allude to the violation of free choice.
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Credit: Source: IFJ PAN / Iwona Michniewska
Do we have free choice or are our decisions predetermined? Is physical reality local, or does what we do here and now have an immediate influence on events elsewhere? The answers to these questions are sought by physicists in the Bell inequalities. It turns out that free choice and local realism can be skilfully measured and compared. The results obtained reveal surprising relationships of a fundamental and universal nature, going far beyond quantum mechanics itself. ....

United States , United Kingdom , Christoph Gallus , Ewa Borsuk , Pawel Blasiak , Boris Podolsky , Albert Einstein , Marian Smoluchowski Krak , Jamesm Yearsley , Technische Hochschule Mittelhessen , John Stewart Bell , Nathan Rosen , National Research Centre , Intergalactic Science Congress , Research Consortium , European Commission , National Agency For Academic Exchange , Institute Of Nuclear Physics , Proceedings Of The National Academy Sciences , Henryk Niewodniczanski Institute Of Nuclear Physics , Academy Of Sciences , British City University Of London , Cyclotron Centre Bronowice , American Office Of Naval Research Global , Hr Excellence In Research , Nuclear Physics ,