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

Authors
Nemov, SA Parfeniev, RV Shamshur, DV Konstantinov, PP Safonchik, MO Popov, DI Stepien-Damm, J Kaczorowski, D
Citation
Sa. Nemov et al., Observation of superconducting and structural phase transitions in Sn1-zGezTe : In solid solutions, PHYSICA C, 333(1-2), 2000, pp. 31-40
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
333
Issue
1-2
Year of publication
2000
Pages
31 - 40
Database
ISI
SICI code
0921-4534(20000510)333:1-2<31:OOSASP>2.0.ZU;2-I
Abstract
The SnTe-GeTe solid solutions doped with In belong to a new class of superc onducting (SC) materials - semiconducting compounds with a resonant impurit y states on the background of the valence band spectrum. We studied the SC and structural phase transitions (SPT) in the (Sn1-zGez)(1-x)InxTe compound s. Our experimental results include the data on the temperature dependencie s of the lattice parameters, magnetization, Hall effect, and electrical res istivity for (Sn0.8Ge0.2)(1-x)InxTe in the wide temperature range (0.4-400 K). The SPT from cubic to rhombohedral structure was determined by X-ray me asurements. The dependence of SC parameters of (Sn1-zGez)(1-x)InxTe on Ge c ontent (z = 0/0.4 with the step of z equal 0.05) were obtained for two Ln c oncentrations (x = 0.05, 0.16). (C) 2000 Elsevier Science B.V. All rights r eserved.