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Effect of chemical doping on heterostructured Fe-based superconductor Sr2VO3FeAs

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Title
Effect of chemical doping on heterostructured Fe-based superconductor Sr2VO3FeAs
Author(s)
Jong Mok Ok; Na S.W.; Jun Sung Kim
Publication Date
2018-03
Journal
Progress in Superconductivity and Cryogenics, v.20, no.1, pp.28 - 31
Publisher
Korea Institute of Applied Superconductivity and Cryogenics
Abstract
© 2018, Korea Institute of Applied Superconductivity and Cryogenics. All rights reserved.Phase diagrams of electron- and hole-doped Sr2VO3FeAs are investigated using Co and Mn substitution at Fe site. Metallic nature survives only for Co (electron) doping, not for Mn (hole) doping. The conductivity of Sr2VO3(Fe,M)As (M=Mn,Co) is sensitive to the structural modification of FeAs microstructure rather than carrier doping. This finding implies that the FeAs layer plays a dominant role on the charge conduction, thus the SrVO3 layers should be considered as an insulating block. Also, we found that the superconductivity is rapidly suppressed by both dopants. This result is different from the conventional behavior that superconductivity is induced by doping in the most of Fe pnictides. Our finding strongly supports the uniqueness of Sr2VO3FeAs among the Fe pnictide superconductors
URI
https://pr.ibs.re.kr/handle/8788114/6492
ISSN
1229-3008
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > Journal Papers (저널논문)
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2019_Progress in Superconductivity and Cryogenics_김준성(교신)_Effect of chemical doping on heterostructured Fe-based superconductor Sr2VO3FeAs.pdfDownload

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