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Recent Science Highlights

An Iridate with Fermi Arcs

Researchers have discovered that "Fermi arcs," much-debated features found in the electronic structure of high-temperature superconducting (HTSC) cuprates, can also be found in an iridate (iridium oxide) compound—strontium iridate.

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The Electronic Structure of a Two-Dimensional Pure Copper Oxide Lattice

All superconducting cuprates share a common crystal structure, consisting of charge reservoirs stacked between layers of CuO2. An undoped version of these materials, including only copper and oxygen, is not available in nature. By growing epitaxial films with a pulsed-laser deposition facility, researchers stabilized a 2D version of CuO, which can be thought as composed by two CuO2 planes staggered and superposed.

 

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ALS Evidence Confirms Combustion Theory

Researchers recently uncovered the first step in the process that transforms gas-phase molecules into solid particles like soot and other carbon-based compounds. It’s a discovery that could help combustion chemists make more efficient, less polluting fuels and help materials scientists fine-tune their carbon nanotubes and graphene sheets for faster, smaller electronics.

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Rare Iron Oxide in Ancient Chinese Pottery

New analysis of ancient Jian ware reveals that the distinctive pottery contains an unexpected and highly unusual form of iron oxide. This rare compound was only recently discovered and characterized by scientists and so far has been extremely difficult to create with modern techniques.

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