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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 ,

Nanotechnology Now - Press Release: Thin is now in to turn terahertz polarization: Rice lab's discovery of 'magic angle' builds on its ultrathin, highly aligned nanotube films


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Home > Press > Thin is now in to turn terahertz polarization: Rice lab’s discovery of ‘magic angle’ builds on its ultrathin, highly aligned nanotube films
Rice University physicists have made unique broadband polarization rotators with ultrathin carbon nanotube films. The films optically rotate polarized light output by 90 degrees, but only when the input light’s polarization is at a specific angle with respect to the nanotube alignment direction: the “magic angle.” (Credit: Kono Laboratory/Rice University)
Abstract:
It’s always good when your hard work reflects well on you. With the discovery of the giant polarization rotation of light, that is literally so. ....

Rice University , United States , Timothy Noe , Saunab Ghosh , Andrey Baydin , Natsumi Komatsu , Takuma Makihara , Fuyang Tay , Junichiro Kono , Karlf Hasselmann , Mike Williams , Jeff Falk , National Science Foundation , Natural Sciences , Us Department Of Energy , Curl Institute , Baker Institute For Public , Kono Laboratory Rice University , Wave Inc , Princeton Review , Home Press , Attwell Welch Postdoctoral Fellow , Continuing Studies , Social Sciences , Baker Institute , Price News ,