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Tuning the superconducting and magnetic properties of Fe_{y}Se_{0.25}Te_{0.75} by varying the iron content


Bendele, M; Babkevich, P; Katrych, S; Gvasaliya, S; Pomjakushina, E; Conder, K; Roessli, B; Boothroyd, A; Khasanov, R; Keller, H (2010). Tuning the superconducting and magnetic properties of Fe_{y}Se_{0.25}Te_{0.75} by varying the iron content. Physical Review. B, Condensed Matter and Materials Physics, 82(21):212504.

Abstract

The superconducting and magnetic properties of FeySe0.25Te0.75 single crystals (0.9≤y≤1.1) were studied by means of x-ray diffraction, superconducting quantum interference device magnetometry, muon-spin rotation, and elastic neutron diffraction. The samples with y<1 exhibit coexistence of bulk superconductivity and incommensurate magnetism. The magnetic order remains incommensurate for y≥1 but with increasing Fe content superconductivity is suppressed and the magnetic correlation length increases. The results show that the superconducting and the magnetic properties of the FeySe1−xTex can be tuned not only by varying the Se/Te ratio but also by changing the Fe content.

©2010 The American Physical Society

Abstract

The superconducting and magnetic properties of FeySe0.25Te0.75 single crystals (0.9≤y≤1.1) were studied by means of x-ray diffraction, superconducting quantum interference device magnetometry, muon-spin rotation, and elastic neutron diffraction. The samples with y<1 exhibit coexistence of bulk superconductivity and incommensurate magnetism. The magnetic order remains incommensurate for y≥1 but with increasing Fe content superconductivity is suppressed and the magnetic correlation length increases. The results show that the superconducting and the magnetic properties of the FeySe1−xTex can be tuned not only by varying the Se/Te ratio but also by changing the Fe content.

©2010 The American Physical Society

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2010
Deposited On:13 Feb 2011 14:39
Last Modified:17 Feb 2018 18:37
Publisher:American Physical Society
ISSN:1098-0121
OA Status:Green
Publisher DOI:https://doi.org/10.1103/PhysRevB.82.212504
Related URLs:http://arxiv.org/abs/1010.0573

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