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- W1970224908 abstract "This study presents an unprecedented route in inducing superconductivity in SrFe2As2 single crystals by ion implantation. Na+ implantation into SrFe2As2 single crystals did not induce superconductivity nor did it shift the spin-density wave (SDW) anomaly at 205 K. In contrast, above a threshold of 2 at.% dosage, all the K+- and Ca2+-implanted crystals show a superconducting transition below 25 K in magnetisation and resistivity measurements. Due to the shallow implantation depth of the ions, the observed superconductivity is in principle confined to the surface or sub-surface level, and the normal state can be recovered by thermal annealing. This strongly suggests superconductivity in these samples is induced by surface or sub-surface crystallographic strain. The deduced anisotropy ratio of the upper critical field is above 3 in all the superconducting samples, and more important is the obtained c-axis coherence lengths are longer than the interlayer spacing in SrFe2As2 implying strong interlayer coupling in these superconductors." @default.
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- W1970224908 date "2011-04-28" @default.
- W1970224908 modified "2023-09-27" @default.
- W1970224908 title "Surface superconductivity on SrFe <sub>2</sub> As <sub>2</sub> single crystals induced by ion implantation" @default.
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- W1970224908 doi "https://doi.org/10.1209/0295-5075/94/37009" @default.
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