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- W2004502094 abstract "We find a linear relation between the conductivity $ensuremath{sigma}$ and the Mn spin concentration x in pure AlPdMn single grains of high structural quality. We associate the vanishing concentration of Mn spins (down to $4ifmmodetimeselsetexttimesfi{}{10}^{ensuremath{-}5}$ moments) to local defects in the Mn atoms local environments. Both $ensuremath{sigma}$ and x are set by the nominal composition and can be reversibly tuned by careful heat treatments. We deduce that low $ensuremath{sigma}$ characteristics of perfect AlPdMn quasicrystals can only be observed for concentrations of magnetic Mn lower than $x<5ifmmodetimeselsetexttimesfi{}{10}^{ensuremath{-}4},$ i.e., for defects more than about $30 mathrm{AA{}}$ apart. In addition, we show that a Kondo-like effect explains the low-temperature $ensuremath{sigma}$ upturn, also linear with x." @default.
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- W2004502094 date "2002-03-28" @default.
- W2004502094 modified "2023-09-25" @default.
- W2004502094 title "Linear increase of the conductivity with the concentration of local defects in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi mathvariant=normal>AlPdMn</mml:mi></mml:math>quasicrystals" @default.
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- W2004502094 doi "https://doi.org/10.1103/physrevb.65.140203" @default.
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