Inhomogeneities and superconductivity in poly-phase Fe-Se-Te systems
S Hartwig, N Schäfer, M Schulze, S Landsgesell… - Physica B: Condensed …, 2018 - Elsevier
The impact of synthesis conditions, post-preparation heating procedure, aging and influence
of pressure on the superconducting properties of FeSe 0.4 Te 0.6 crystals is reported. Two
FeSe 0.4 Te 0.6 single crystals were used in the study, prepared from stoichiometric melt but
cooled down with very different cooling rates, and investigated using magnetic bulk and
electrical-resistivity methods. The fast-cooled crystal contains large inclusions of F e 3 Se 2.1
Te 1.8 and exhibits bulk superconductivity in its as-prepared state, while the other is …
of pressure on the superconducting properties of FeSe 0.4 Te 0.6 crystals is reported. Two
FeSe 0.4 Te 0.6 single crystals were used in the study, prepared from stoichiometric melt but
cooled down with very different cooling rates, and investigated using magnetic bulk and
electrical-resistivity methods. The fast-cooled crystal contains large inclusions of F e 3 Se 2.1
Te 1.8 and exhibits bulk superconductivity in its as-prepared state, while the other is …
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