Anomalous enhancement of the superconducting transition temperature of electron-doped La2–xCexCuO4 and Pr2–xCexCuO4 cuprate heterostructures
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Univ. of Maryland, College Park, MD (United States)
- Tel Aviv Univ., Tel Aviv (Israel)
- Univ. of Illinois at Urbana-Champaign, IL (United States)
The superconducting transition temperature Tc of multilayers of electron-doped cuprates, composed of underdoped (or undoped) and overdoped La2–xCexCuO4 (LCCO) and Pr2–xCexCuO4 (PCCO) thin films, is found to increase significantly with respect to the Tc of the corresponding single-phase films. Herein, 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.
- Research Organization:
- Univ. of Illinois at Urbana-Champaign, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); US Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF); U.S.-Israel Binational Science Foundation (BSF)
- Grant/Contract Number:
- FG02-06ER46285; AC02-98CH10886; FA9550-09-1-0603; DMR-0653535; 2006385
- OSTI ID:
- 1958855
- Alternate ID(s):
- OSTI ID: 1099940
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 83, Issue 6; ISSN 1098-0121
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 13 works
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