Observation of superconducting and structural phase transitions in Sn1-zGezTe :In solid solutions
Identifieur interne : 000B59 ( Russie/Analysis ); précédent : 000B58; suivant : 000B60Observation of superconducting and structural phase transitions in Sn1-zGezTe :In solid solutions
Auteurs : RBID : Pascal:00-0467941Descripteurs français
- Pascal (Inist)
- Etude expérimentale, Transformation phase, Solution solide, Matériau dopé, Addition indium, Conductivité électrique, Aimantation, Température transition supraconductrice, Effet Hall, Etain tellurure, Germanium tellurure, Supraconductivité, Diffraction RX, 7425, 7462B, 7470D, 6470K, Sn1-xGexTe:In, Ge Sn Te.
English descriptors
- KwdEn :
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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Ge<sub>z</sub>
Te :In solid solutions</title>
<author><name sortKey="Nemov, S A" uniqKey="Nemov S">S. A. Nemov</name>
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<author><name sortKey="Shamshur, D V" uniqKey="Shamshur D">D. V. Shamshur</name>
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<author><name sortKey="Safonchik, M O" uniqKey="Safonchik M">M. O. Safonchik</name>
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<author><name sortKey="Popov, D I" uniqKey="Popov D">D. I. Popov</name>
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<author><name sortKey="Stepien Damm, J" uniqKey="Stepien Damm J">J. Stepien-Damm</name>
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<front><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>
)<sub>1</sub>
In<sub>x</sub>
Te compounds. Our experimental results include the data on the temperature dependencies of the lattice parameters, magnetization, Hall effect, and electrical resistivity for (Sn<sub>0.8</sub>
Ge<sub>0.2</sub>
)<sub>1-x</sub>
In<sub>x</sub>
Te 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 (Sn<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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Ge<sub>z</sub>
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Gex<sub>z</sub>
)<sub>1</sub>
In<sub>x</sub>
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