Concentration range for superconductivity in high-qualityPr2−xCexCuO4−ythin films

Autor:	E. Maiser, G. Czjzek, T. Venkatesan, R. L. Greene, J. L. Peng
Rok vydání:	1997
Předmět:	Superconductivity Range (particle radiation) Crystallography Quality (physics) Materials science Condensed matter physics Electrical resistivity and conductivity Condensed Matter::Superconductivity visual_art visual_art.visual_art_medium Ceramic Thin film Pulsed laser deposition
Zdroj:	Physical Review B. 55:R6145-R6148
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.55.r6145
Popis:	We report ac susceptibility, electrical resistivity, and structural measurements on crystalline ${\mathrm{Pr}}_{2\mathrm{\ensuremath{-}}\mathrm{x}}$${\mathrm{Ce}}_{\mathrm{x}}$${\mathrm{CuO}}_{4\mathrm{\ensuremath{-}}\mathrm{y}}$ (PCCO) thin films prepared by pulsed laser deposition. We find superconductivity occurs within a narrow Ce concentration range (0.130.20) similar to that found for ceramic samples of this ``electron-doped'' material. Our results are quite different than those recently reported [Phys. Rev. Lett. 74, 4927 (1995)] on PCCO single crystals where superconductivity near 20 K was found for Ce concentration as low as x=0.04. Possible reasons for this difference will be discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::37afb3a89ba4ea9fec72b7c2444d941e https://doi.org/10.1103/physrevb.55.r6145 Zobrazit plný text záznamu