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- W2023369521 abstract "We report Hall-effect measurements on single crystals of antiferromagnetic pyrite-type ${mathrm{NiS}}_{2}$ (${mathit{T}}_{mathit{N}}$=40 K), in which the resistivity appears to show a metal-insulator transition at Tensuremath{approxeq}100 K. Our transport measurements demonstrate that this transition is not intrinsic to the bulk: At low temperatures the transport is dominated by a metalliclike conduction at the surface, with carrier density ${mathit{n}}_{mathit{s}}$ensuremath{approxeq}5ifmmodetimeselsetexttimesfi{}${10}^{14}$ ${mathrm{cm}}^{mathrm{ensuremath{-}}2}$, and mobility ${mathrm{ensuremath{mu}}}_{mathit{s}}$ensuremath{approxeq}1.3 ${mathrm{cm}}^{2}$/Vs at T=0. For T>100 K the sample conductance is dominated by the bulk, which behaves like a doped semiconductor; the acceptorlike impurity states have binding energy ${mathit{E}}_{mathit{B}}$=80 meV. The valence-band mobility is ensuremath{mu}ensuremath{approxeq}0.002 ${mathrm{cm}}^{2}$/Vs." @default.
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- W2023369521 date "1994-10-15" @default.
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- W2023369521 title "Hall effect and conductivity in pyrite<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>NiS</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>" @default.
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- W2023369521 doi "https://doi.org/10.1103/physrevb.50.10574" @default.
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