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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 ,

Microscope allows ultrafast nanoscale manipulation while tracking energy dynamics


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IMAGE: Basic concept of THz-field-driven scanning tunneling luminescence (THz-STL) spectroscopy. Luminescence from a localized plasmon can be induced by THz-field-driven inelastically tunneled electrons.
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Credit: Yokohama National University
Since the early 2010s, ultrafast probing of materials at atomic-level resolution has been enabled by terahertz scanning tunneling microscopes (THz-STM). But these devices can t detect the dissipation of energy that happens during events such as when photons are emitted via recombination process of an electron-hole pair in a light emitting diode (LED). However, a new technique allows the tracking of just such energy dynamics alongside THz-STM, opening up new avenues of investigation for nanoscale science and technology. ....

Jun Takeda , Ikufumi Katayama , Yokohama National University , National University , Chemistry Physics Materials Sciences , Nanotechnology Micromachines , ஜூன் டாகேடா , யோகோகாமா தேசிய பல்கலைக்கழகம் , தேசிய பல்கலைக்கழகம் , வேதியியல் இயற்பியல் பொருட்கள் அறிவியல் ,

被害額607億円、過去10年で最多 仮住まい198人 - 大分のニュースなら 大分合同新聞プレミアムオンライン Gate

被害額607億円、過去10年で最多 仮住まい198人 - 大分のニュースなら 大分合同新聞プレミアムオンライン Gate
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