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- W1671710507 abstract "The intermetallic compound ${mathrm{CeCoGe}}_{2.25}{mathrm{Si}}_{0.75}$ has an antiferromagnetic transition at ${T}_{N}=5.5 mathrm{K}.$ Hydrostatic pressure decreases the Neel temperature and drives this system to a quantum critical point (QCP). We characterize this approach to the QCP using electrical resistivity measurements. For $T<{T}_{N}$ the resistivity is dominated by electron-magnon scattering and this allows to obtain the pressure variation of the spin-wave gap and of the spin-wave velocity. We find that for a significant range of pressure close to the QCP, the gap and the Neel temperature decrease with pressure while the velocity remains constant. We obtain the relevant magnetic parameters from the electrical measurements and discuss the implications of our results within a model that emphasizes the importance of two-dimensional fluctuations." @default.
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- W1671710507 date "2001-06-05" @default.
- W1671710507 modified "2023-09-28" @default.
- W1671710507 title "Anisotropic quantum critical behavior in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>CeCoGe</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Si</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>" @default.
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- W1671710507 doi "https://doi.org/10.1103/physrevb.64.012404" @default.
- W1671710507 hasPublicationYear "2001" @default.
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