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- W2035048657 abstract "We report a comprehensive study of dc susceptibility, specific-heat, neutron-diffraction, and inelastic neutron-scattering measurements on polycrystalline Ba${}_{3}$(Cr${}_{1ensuremath{-}x}$V${}_{x}$)${}_{2}$O${}_{8}$ samples, where $x=0$, 0.06, 0.15, and 0.53. A Jahn-Teller structure transition occurs for $x=0$, 0.06, and 0.15 samples, and the transition temperature is reduced upon vanadium substitution from 70(2) K at $x=0$ to 60(2) K at $x=0.06$ and 0.15. The structure becomes less distorted as $x$ increases, and such transition disappears at $x=0.53$. The observed magnetic excitation spectrum indicates that the singlet ground state remains unaltered and spin-gap energy $ensuremath{Delta}=1.3(1)$ meV is identical within the instrument resolution for all $x$. In addition, the dispersion bandwidth $W$ decreases with increase of $x$. At $x=0.53$, $W$ is reduced to 1.4(1) meV from 2.0(1) meV at $x=0$." @default.
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- W2035048657 date "2013-04-30" @default.
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- W2035048657 title "Structural and magnetic properties in the quantum<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mi>S</mml:mi><mml:mo>=</mml:mo><mml:mfrac><mml:mn>1</mml:mn><mml:mn>2</mml:mn></mml:mfrac></mml:mrow></mml:math>dimer system Ba<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mrow /><mml:mn>3</mml:mn></mml:msub></mml:math>(Cr<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mrow…" @default.
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- W2035048657 doi "https://doi.org/10.1103/physrevb.87.144427" @default.
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