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source:scienceAbstractIn a quantum network, coherent emitters can be entangled over large distances using photonic channels. In solid-state devices, the required efficient light-emitter interface can be implemented by confining the light in nanophotonic structures. However, fluctuating charges and magnetic moments at the nearby interface then lead to spectral instability of the emitters. Here, we avoid this limitation when enhancing the photon emission up to 70(12)-fold using a Fabry-Perot resonator with an embedded 19-micrometer-thin crystalline membrane, in which we observe around 100 indivi...
Release time: 2022 - 10 - 27
source:natureAbstractWe provide a set of computational experiments based on ab initio calculations to elucidate whether a cuprate-like antiferromagnetic insulating state can be present in the phase diagram of the low-valence layered nickelate family (Rn+1NinO2n+2, R= rare-earth, n=1−∞) in proximity to half-filling. It is well established that at d9 filling the infinite-layer (n=∞) nickelate is metallic, in contrast to cuprates wherein an antiferromagnetic insulator is expected. We show that for the Ruddlesden-Popper (RP) reduced phases of the series (finite n) an antiferromagnetic insulating g...
Release time: 2022 - 10 - 26
source:ohio.eduScientists at Ohio University, Argonne National Laboratory, and the University of Illinois at Chicago have, for the first time, formed a charged rare earth molecule on a metal surface and rotated it — both clockwise and counterclockwise without affecting its charge — using scanning tunneling microscopy.Their work opens a new window for research on the atomic-scale manipulation of materials important to the future, from quantum computing to consumer electronics.'Rare earth elements are vital for high-technological applications including cell phones, HDTVs, and more. This is t...
Release time: 2022 - 10 - 25
source:natureAbstractWithin this work, we demonstrate in-situ alignment of the easy axis single-crystal magnetic particles inside a polymer matrix using fused filament fabrication. Two different magnetic materials are investigated: (i) Strontium hexaferrite inside a PA6 matrix, fill grade: 49 vol% and (ii) Samarium iron nitride inside a PA12 matrix, fill grade: 44 vol%. In the presence of the external alignment field, the strontium hexaferrite particles inside the PA6 matrix can be well aligned with a ratio of remnant magnetization to saturation magnetization in an easy axis of 0.7. No signifi...
Release time: 2022 - 10 - 24
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