Anomalous Enhancement of the Superconducting Transition Temperature of Electron-doped La2-xCexCuO4 and Pr2-xCexCuO4 Cuprate Heterostructures

Jin, K; Vach, P; Zhang, X; Grupel, U; Zohar, E; Diamant, I; Dagan, Y; Smadici, S; Abbamonte, P; Greene, R

doi:10.1103/PhysRevB.83.060511

Title: Anomalous Enhancement of the Superconducting Transition Temperature of Electron-doped La2-xCexCuO4 and Pr2-xCexCuO4 Cuprate Heterostructures

Journal Article · Sat Dec 31 00:00:00 EST 2011 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.83.060511· OSTI ID:1042108

Jin, K; Vach, P; Zhang, X; Grupel, U; Zohar, E; Diamant, I; Dagan, Y; Smadici, S; Abbamonte, P; Greene, R

The superconducting transition temperature T{sub c} of multilayers of electron-doped cuprates, composed of underdoped (or undoped) and overdoped La{sub 2-x}Ce{sub x}CuO{sub 4} (LCCO) and Pr{sub 2-x}Ce{sub x}CuO{sub 4} (PCCO) thin films, is found to increase significantly with respect to the T{sub c} 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 T{sub c} enhancement is caused by a redistribution of charge over an anomalously large distance.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

DOE Contract Number:: DE-AC02-98CH10886

OSTI ID:: 1042108

Report Number(s):: BNL-97786-2012-JA; TRN: US201212%%519

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Vol. 83, Issue 6; ISSN 1098-0121

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

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