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Observation of superconducting and structural phase transitions in Sn1-zGezTe :In solid solutions

Identifieur interne : 000B59 ( Russie/Analysis ); précédent : 000B58; suivant : 000B60

Observation of superconducting and structural phase transitions in Sn1-zGezTe :In solid solutions

Auteurs : RBID : Pascal:00-0467941

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Abstract

The SnTe-GeTe solid solutions doped with In belong to a new class of superconducting (SC) materials - semiconducting compounds with a resonant impurity states on the background of the valence band spectrum. We studied the SC and structural phase transitions (SPT) in the Sn1-xGexz)1 InxTe compounds. Our experimental results include the data on the temperature dependencies of the lattice parameters, magnetization, Hall effect, and electrical resistivity for (Sn0.8Ge0.2)1-xInxTe in the wide temperature range (0.4-400 K), The SPT from cubic to rhombohedral structure was determined by X-ray measurements. The dependence of SC parameters of (Sn1-zGez)1-xInxTe on Ge content (z = 0/0.4 with the step of z equal 0.05) were obtained for two In concentrations (x = 0.05, 0.16).

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Pascal:00-0467941

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Te :In solid solutions</title>
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<div type="abstract" xml:lang="en">The SnTe-GeTe solid solutions doped with In belong to a new class of superconducting (SC) materials - semiconducting compounds with a resonant impurity states on the background of the valence band spectrum. We studied the SC and structural phase transitions (SPT) in the Sn
<sub>1-x</sub>
Gex
<sub>z</sub>
)
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In
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<sub>0.8</sub>
Ge
<sub>0.2</sub>
)
<sub>1-x</sub>
In
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<sub>1-z</sub>
Ge
<sub>z</sub>
)
<sub>1-x</sub>
In
<sub>x</sub>
Te on Ge content (z = 0/0.4 with the step of z equal 0.05) were obtained for two In concentrations (x = 0.05, 0.16).</div>
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<sub>0.8</sub>
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)
<sub>1-x</sub>
In
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