Two superconducting transitions in single-crystal La 2 − x Ba x CuO 4
Tee, Xian Yang
Date of Issue2017
School of Physical and Mathematical Sciences
We use spatially-resolved transport techniques to investigate the superconducting properties of single crystals La2−xBax CuO4. We find a superconducting transition temperature Tcs associated with the ab-plane surface region which is considerably higher than the bulk Tc. The effect is pronounced in the region of charge carrier doping x with strong spin-charge stripe correlations, reaching Tcs=36 K or 1.64 Tc.
Physical Review B
© 2017 American Physical Society (APS). This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society (APS). The published version is available at: [http://dx.doi.org/10.1103/PhysRevB.95.054516]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.