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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

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
Article number060511
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number6
DOIs
StatePublished - 11 Feb 2011

Funding

FundersFunder number
National Science Foundation
Directorate for Mathematical and Physical Sciences0653535
Directorate for Mathematical and Physical Sciences

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