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- W2027082707 abstract "We report the first low-temperature-irradiation experiment of thin films of the Chevrel-phase superconductor Pb${mathrm{Mo}}_{6}$${mathrm{S}}_{8}$ with fast ions (20-MeV sulfur). The films were prepared by dc magnetron sputtering and had superconducting critical temperatures ${T}_{c}$ up to 12.85 K (midpoint) with onsets of superconductivity up to 14.7 K. As a function of fluence, ${T}_{c}$, the initial slope of the upper critical field ${(frac{d{H}_{c2}}{mathrm{dT}})}_{T={T}_{c}}$, the low-temperature resistivity $ensuremath{rho}(16 mathrm{K})$, and its temperature dependence $ensuremath{rho}(T)$ have been measured. The ${H}_{c2}(T)$ and $ensuremath{rho}$ data indicate a defect-induced reduction of the electronic density of states at the Fermi level $N({E}_{F})$. This appears to be responsible for the strong decrease of ${T}_{c}$ which drops below 1.2 K at the comparatively very low fluence of ${10}^{14}$ ${mathrm{cm}}^{ensuremath{-}2}$. The ${T}_{c}$ decrease is accompanied by a change in the behavior of $ensuremath{rho}(T)$ from metallic with a residual resistance ratio of about two to less than one at a fluence of only 3.9ifmmodetimeselsetexttimesfi{}${10}^{13}$ ${mathrm{cm}}^{ensuremath{-}2}$ where ${T}_{c}$ is still 6.32 K. The resistance ratio decreases further with irradiation and is less than 0.5 at 6.5ifmmodetimeselsetexttimesfi{}${10}^{14}$ ${mathrm{cm}}^{ensuremath{-}2}$. We estimate the obtained defect concentrations and propose a simple model which could explain the observed experimental results." @default.
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- W2027082707 title "Preparation and effects of irradiation-induced disorder in Pb<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Mo</mml:mi></mml:mrow><mml:mrow><mml:mn>6</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>S</mml:mi></mml:mrow><mml:mrow><mml:mn>8</mml:mn></mml:mrow></mml:msub></mml:…" @default.
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- W2027082707 doi "https://doi.org/10.1103/physrevb.27.212" @default.
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