Anomalous enhancement of the superconducting transition temperature of electron-doped La2-xCexCuO4 and Pr 2-xCexCuO4 cuprate heterostructures

K. Jin, P. Bach, X. H. Zhang, U. Grupel, E. Zohar, I. Diamant, Y. Dagan, S. Smadici, P. Abbamonte, R. L. Greene

Research output: Contribution to journalArticlepeer-review

Abstract

The superconducting transition temperature Tc of multilayers of electron-doped cuprates, composed of underdoped (or undoped) and overdoped La2-xCexCuO4 (LCCO) and Pr2-xCe xCuO4 (PCCO) thin films, is found to increase significantly with respect to the Tc of the corresponding single-phase films. By investigating the critical current density of superlattices with different doping levels and layer thicknesses, we find that the Tc enhancement is caused by a redistribution of charge over an anomalously large distance.

Original languageEnglish (US)
Article number060511
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number6
DOIs
StatePublished - Feb 11 2011

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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