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- W2004100809 abstract "Magnetization, DC and AC bulk susceptibility of the $S$=1 Haldane chain system doped with electronic holes, Y$_{2-x}$Ca$_x$BaNiO$_5$ (0$leq$x$leq$0.20), have been measured and analyzed. The most striking results are (i) a sub-Curie power law behavior of the linear susceptibility, $chi (T)$$sim $ $T$$^{-alpha}$, for temperature lower than the Haldane gap of the undoped compound (x=0) (ii) the existence of a spin-glass thermodynamic transition at $T$$_g$ = 2-3 K. These findings are consistent with (i) random couplings within the chains between the spin degrees of freedom induced by hole doping, (ii) the existence of ferromagnetic bonds that induce magnetic frustration when interchain interactions come into play at low temperature." @default.
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- W2004100809 date "2001-05-11" @default.
- W2004100809 modified "2023-09-29" @default.
- W2004100809 title "Random interactions and spin-glass thermodynamic transition in the hole-doped Haldane systemY2−xCaxBaNiO5" @default.
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- W2004100809 doi "https://doi.org/10.1103/physrevb.63.212406" @default.
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