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- W2003240413 abstract "A spin-singlet ground state with a spin gap has been discovered in antiferromagnetic spin chain substances when the spin value is 1/2, 1, or 2. To find spin-gap (singlet-triplet) excitations in spin-$frac{3}{2}$ chain substances, we performed inelastic neutron scattering and magnetization measurements on $Rmathrm{CrGeO}{}_{5}$ ($R=text{Y}$ or Sm) powders. As expected, we observed spin-gap excitations and the dispersion relation of the lowest magnetic excitations. We proved that the spin system of $mathrm{Cr}{}^{3+}$ was an antiferromagnetic alternating spin-$frac{3}{2}$ chain. We describe the influence of frustration between nearest-neighbor and next-nearest-neighbor exchange interactions in the chain." @default.
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- W2003240413 date "2014-07-21" @default.
- W2003240413 modified "2023-10-16" @default.
- W2003240413 title "Experimental confirmation of spin gap in antiferromagnetic alternating spin-<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mfrac><mml:mn>3</mml:mn><mml:mn>2</mml:mn></mml:mfrac></mml:math>chain substances<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mi>R</mml:mi><mml:mi mathvariant=normal>CrGeO</mml:mi><mml:msub><mml:mrow /><mml:mn>5</mml:mn></mml:msub></mml:math>(<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mi>R</mml:mi><mml:mo>=</mml:mo><mml:…" @default.
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- W2003240413 doi "https://doi.org/10.1103/physrevb.90.024416" @default.
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