Two Superconducting Transitions in Single Crystal La$_{2-x}$Ba$_x$CuO$_4$

C. Panagopoulos; I. Martin; T. Ito; T. Ushiyama; X. Y. Tee; Y. Tomioka

arxiv: 1604.00665 · v2 · pith:L5M6FD2Nnew · submitted 2016-04-03 · ❄️ cond-mat.supr-con

Two Superconducting Transitions in Single Crystal La_(2-x)Ba_xCuO₄

X. Y. Tee , T. Ito , T. Ushiyama , Y. Tomioka , I. Martin , C. Panagopoulos This is my paper

classification ❄️ cond-mat.supr-con

keywords superconductingregionsingleab-planeassociatedbulkcarriercharge

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We use spatially-resolved transport techniques to investigate the superconducting properties of single crystals La$_{2-x}$Ba$_x$CuO$_4$. We find a new superconducting transition temperature $T_{cs}$ associated with the ab-plane surface region which is considerably higher than the bulk $T_c$. The effect is pronounced in the region of charge carrier doping $x$ with strong spin-charge stripe correlations, reaching $T_{cs}=36$ K or 1.64$T_c$.

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Two Superconducting Transitions in Single Crystal La_(2-x)Ba_xCuO₄

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