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- W2604447215 abstract "The structural and electronic properties of $mathrm{BaC}{mathrm{r}}_{2}mathrm{A}{mathrm{s}}_{2}$, which is isostructural to the 122 iron arsenide superconductors, are studied at high pressures using synchrotron x-ray powder diffraction, electrical resistivity measurements, and first-principles calculations. At a pressure of about 18.5 GPa, an isostructural phase transition to a collapsed tetragonal phase is observed, similar to that in $mathrm{BaF}{mathrm{e}}_{2}mathrm{A}{mathrm{s}}_{2}$. In both phases, $mathrm{BaC}{mathrm{r}}_{2}mathrm{A}{mathrm{s}}_{2}$ is a normal metal. Electronic structure calculations suggest a metallic and antiferromagnetic ground state with $G$-type magnetic order for the collapsed tetragonal phase." @default.
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- W2604447215 date "2017-04-07" @default.
- W2604447215 modified "2023-09-27" @default.
- W2604447215 title "Pressure-induced transition to the collapsed tetragonal phase in <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mi>BaC</mml:mi><mml:msub><mml:mi mathvariant=normal>r</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mi mathvariant=normal>A</mml:mi><mml:msub><mml:mi mathvariant=normal>s</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>" @default.
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- W2604447215 doi "https://doi.org/10.1103/physrevb.95.144106" @default.
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