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Proximity effect in electron-doped cuprate Josephson junctions.
- Source :
-
Applied Physics Letters . 7/18/2011, Vol. 99 Issue 3, p032511. 3p. 2 Graphs. - Publication Year :
- 2011
-
Abstract
- We study the proximity effect in Josephson junctions made of electron-doped cuprates Pr2-xCexCuO4 (PCCO). With superconducting electrodes at a fixed doping x = 0.15, we explore the variation of the Josephson coupling with the doping and the thickness of the barrier. We observe Josephson coupling for any type of barrier: antiferromagnetic (AF) metal, AF insulator, or paramagnetic metal. For an x = 0.05 barrier, we can estimate the normal coherence length, ξn = 12 ± 3 nm. Comparing this value with the theoretical prediction, ξn,max = 4.5 nm, we conclude that the proximity effect through a barrier of PCCO x = 0.05 is stronger than expected. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 99
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 63044479
- Full Text :
- https://doi.org/10.1063/1.3613999