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Mapping the electronic states in an exotic superconductor


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IMAGE: (Left) Through neutron scattering experiments, scientists observed distinct patterns of magnetic correlations in superconducting ( single-stripe magnetism ) and nonsuperconducting ( double-stripe magnetism ) samples of a compound containing iron (Fe), tellurium (Te), and.
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Credit: Brookhaven National Laboratory
UPTON, NY Scientists characterized how the electronic states in a compound containing iron, tellurium, and selenium depend on local chemical concentrations. They discovered that superconductivity (conducting electricity without resistance), along with distinct magnetic correlations, appears when the local concentration of iron is sufficiently low; a coexisting electronic state existing only at the surface (topological surface state) arises when the concentration of tellurium is sufficiently high. Reported in ....

United States , Yangmu Li , Fernando Camino , Gwen Wright , Gendu Gu , Nader Zaki , Peter Johnson , Igor Zaliznyak , Division Electron Spectroscopy Group , Division Neutron Scattering Group , Us Department Of Energy , Brookhaven Center , Office Of Science User Facilities , Office Of Science , Oak Ridge National Laboratory , Brookhaven National Laboratory , Nature Materials , Neutron Scattering Group , Condensed Matter Physics , Materials Science , Brookhaven National , Spallation Neutron Source , Ridge National Laboratory , Functional Nanomaterials , Electron Spectroscopy Group , Science User ,

Study Reveals Platinum's Role in Clean Fuel Conversion


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Study Reveals Platinum s Role in Clean Fuel Conversion
Identifying specific platinum atoms activated in a water gas shift reaction catalyst could guide the design of less costly efficient catalysts
February 10, 2021
Lead author Yuanyuan Li, a research scientist at Stony Brook University s Materials Science and Chemical Engineering Department who has a guest appointment in Brookhaven Lab s Chemistry Division, performs an analysis on a sample using an infrared spectrometer.
UPTON, NY Scientists at the U.S. Department of Energy’s Brookhaven National Laboratory, Stony Brook University (SBU), and other collaborating institutions have uncovered dynamic, atomic-level details of how an important platinum-based catalyst works in the water gas shift reaction. This reaction transforms carbon monoxide (CO) and water (H ....

United States , Yuanyuan Li , Lihua Zhang , Sanjaya Senanayake , Anatoly Frenkel , Brookhaven Lab , Nature Communications , University Of Maryland , National Institute Of Standards , University Of Illinois , Office Of Science , Argonne National Laboratory , Royal Institute Of Technology , Stony Brook University Materials Science , Brookhaven National Laboratory , Arizona State University , Brookhaven Lab Chemistry Division , Brookhaven Chemistry Division , Brookhaven Center , Stony Brook University , Chemical Engineering Department , Study Reveals Platinum , Clean Fuel , Materials Science , Chemistry Division , Functional Nanomaterials ,