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Contrasting carrier doping effects in the Kondo insulator<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="normal">CeOs</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">Al</mml:mi><mml:mn>10</mml:mn></mml:msub></mml:math>: The influential role of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>c</mml:mi><mml:mo>โ</mml:mo><mml:mi>f</mml:mi></mml:math>hybridization in spin-gap formation
The effects of electron (Ir) and hole (Re) doping on the hybridization gap and antiferromagnetic order have been studied by magnetization, muon spin relaxation $({\ensuremath{\mu}}^{+}\mathrm{SR})$, and inelastic neutron scattering on polycrystalline samples of $\mathrm{Ce}({\mathrm{Os}}_{1\ensuremath{-}x}{\mathrm{Ir}}_{x}){}_{2}{\mathrm{Al}}_{10}$ $(x=0.08$ and 0.15) and $\mathrm{Ce}({\mathrm{Os}}_{1\ensuremath{-}y}{\mathrm{Re}}_{y}){}_{2}{\mathrm{Al}}_{10}$ $(y=0.03)$. ${\ensuremath{\mu}}^{+}\mathrm{SR}$ spectra clearly reveal bulk magnetic ordering below 20 and โฆ