source:Science AdvancesFerromagnetically interacting Ising spins on the pyrochlore lattice of corner-sharing tetrahedra form a highly degenerate manifold of low-energy states. A spin flip relative to this “spin-ice” manifold can fractionalize into two oppositely charged magnetic monopoles with effective Coulomb interactions. To understand this process, we have probed the low-temperature magnetic response of spin ice to time-varying magnetic fields through stroboscopic neutron scattering and SQUID magnetometry on a new class of ultrapure Ho2Ti2O7 crystals. Covering almost 10 decades of time sca...
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2021
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source:Investor IntelToday’s demand for critical technology enabling materials was originally brought about by (industrial) policy driven military procurement during, after, and since World War II. The continuing production of these relatively scarce materials is only made economically today possible by the additional and much larger demand of the consumer economy based not on an industrial policy but on the (regulated) free market model of capitalism. Pentagon procurement of its needs for critical materials through policy can bend the law of supply and demand, but it cannot break it. The dema...
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2021
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source:MirageA Laramie business that originated at the University of Wyoming has received a $200,000 U.S. Department of Energy (DOE) grant to develop and commercialize instrumentation platforms for the nondestructive manipulation and analysis of micro- and nano-sized materials.“This ability is highly sought after in the fields of nuclear forensics, nanomedicine and semiconductor fabrication,” says Caleb Hill, an assistant professor in the UW Department of Chemistry and co-founder of Wyonics. “The grant will provide the funds needed to set up a new research and development program at Wyonics, d...
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2021
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source:Physics worldGerman nanotechnology specialist attocube says its attoDRY800 cryostat enables quantum scientists to “reclaim the optical table” and focus on their research not the experimental set-up. Twin-track innovations in cryogenic cooling and optical table design are “creating the space” for fundamental scientific breakthroughs in quantum communications, allowing researchers to optimize the performance of secure, long-distance quantum key distribution (QKD) using engineered single-photon-emitting light sources.In a proof-of-concept study last year, Tobias Heindel and colleague...
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2021
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