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• W1985998099 abstract "The synthesis and crystallography, magnetic susceptibility $ensuremath{chi}$, magnetization $M$, specific heat ${C}_{mathrm{p}}$, in-plane electrical resistivity $ensuremath{rho}$, and in-plane magnetic penetration depth measurements are reported for single crystals of $A$Pd${}_{2}$As${}_{2}$ ($A$ = Ca, Sr, Ba) versus temperature $T$ and magnetic field $H$. The crystals were grown using PdAs self-flux. CaPd${}_{2}$As${}_{2}$ and SrPd${}_{2}$As${}_{2}$ crystallize in a collapsed body-centered tetragonal ${mathrm{ThCr}}_{2}{mathrm{Si}}_{2}$-type structure ($I4/mmm$), whereas BaPd${}_{2}$As${}_{2}$ crystallizes in the primitive tetragonal CeMg${}_{2}$Si${}_{2}$-type structure ($P4/mmm$), in agreement with literature data. The $ensuremath{rho}(T)$ data exhibit metallic behavior for all three compounds. Bulk superconductivity is reported for CaPd${}_{2}$As${}_{2}$ and SrPd${}_{2}$As${}_{2}$ below ${T}_{mathrm{c}}=1.27$ and 0.92 K, respectively, whereas only a trace of superconductivity is found in BaPd${}_{2}$As${}_{2}$. No other phase transitions were observed. The $ensuremath{chi}(T)$ and $M(H)$ data reveal anisotropic diamagnetism in the normal state, with ${ensuremath{chi}}_{c}>{ensuremath{chi}}_{ab}$ for CaPd${}_{2}$As${}_{2}$ and BaPd${}_{2}$As${}_{2}$, and ${ensuremath{chi}}_{c}<{ensuremath{chi}}_{ab}$ for SrPd${}_{2}$As${}_{2}$. The normal and superconducting state data indicate that CaPd${}_{2}$As${}_{2}$ and SrPd${}_{2}$As${}_{2}$ are conventional type-II nodeless $s$-wave electron-phonon superconductors. The electronic superconducting state heat capacity data for CaPd${}_{2}$As${}_{2}$, which has an extremely sharp heat capacity jump at ${T}_{mathrm{c}}$, are analyzed using our recent elaboration of the $ensuremath{alpha}$-model of the BCS theory of superconductivity, which indicates that the $s$-wave gap in this compound is anisotropic in momentum space." @default.
• W1985998099 created "2016-06-24" @default.
• W1985998099 creator A5010180994 @default.
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• W1985998099 date "2013-06-20" @default.
• W1985998099 modified "2023-10-16" @default.
• W1985998099 title "Superconducting and normal-state properties of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>A</mml:mi></mml:math>Pd<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mrow /><mml:mn>2</mml:mn></mml:msub></mml:math>As<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mrow /><mml:mn>2</mml:mn></mml:msub></mml:math>(<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline…" @default.
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• W1985998099 doi "https://doi.org/10.1103/physrevb.87.224510" @default.
• W1985998099 hasPublicationYear "2013" @default.
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