Superconductivity in hole-doped (Sr$_{1-x}$K$_x$)Fe$_2$As$_2$

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dc.creatorChen, G. F.
dc.creatorLi, Z.
dc.creatorLi, G.
dc.creatorHu, W. Z.
dc.creatorDong, J.
dc.creatorZhang, X. D.
dc.creatorZheng, P.
dc.creatorWang, N. L.
dc.creatorLuo, J. L.
dc.date2008-06-06
dc.date.accessioned2026-07-07T09:54:23Z
dc.date.available2026-07-07T09:54:23Z
dc.descriptionA series of layered (Sr$_{1-x}$K$_x$)Fe$_2$As$_2$ compounds with nominal x=0 to 0.40 are synthesized by solid state reaction method. Similar to other parent compounds of iron-based pnictide superconductors, the pure SrFe$_2$As$_2$ shows a strong resistivity anomaly near 210 K, which was ascribed to the spin-density-wave instability. The anomaly temperature is much higher than those observed in LaOFeAs and BaFe$_2$As$_2$, the two prototype parent compounds with ZrCuSiAs- and ThCr$_2$Si$_2$-type structures. K-doping strongly suppresses this anomaly and induces superconductivity. Like in the case of K-doped BaFe$_2$As$_2$, sharp superconducting transitions at T$_c\sim$38 K was observed. We performed the Hall coefficient measurement, and confirmed that the dominant carriers are hole-type. The carrier density is enhanced by a factor of 3 in comparison to F-doped LaOFeAs superconductor.
dc.description3 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0806.1209
dc.identifierhttp://arxiv.org/abs/0806.1209
dc.identifierChin. Phys. Lett. 25, 3403 (2008)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/166297
dc.subjectSuperconductivity
dc.titleSuperconductivity in hole-doped (Sr$_{1-x}$K$_x$)Fe$_2$As$_2$
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