Ovsyannikov, Gennady A. ; Demidov, Viktor V. ; Kislinski, Yuli V. ; Komissinski, Philippe V. ; Winkler, Dag (2007)
Conductivity and antiferromagnetism of CaCuO2 thin films doped by Sr.
In: Physica C: Superconductivity, 460-462
doi: 10.1016/j.physc.2007.03.144
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The results of electrical and magnetic investigations of epitaxial CaxSr1−xCuO2 (CSCO) thin films grown by pulsed laser deposition are presented. The experimental temperature dependence of the CSCO film conductivity at low doping level is well described by the 3-d Mott insulator model over a wide temperature range (4.2–300 K). A deviation from the model with changing of Sr concentration has been observed. The Neel temperature of the films, TN, was determined by electron paramagnetic resonance technique. The comparison of the obtained TN value with the one previously obtained for the CSCO powder sample could be caused by oxygen vacancies in the CSCO films. Nb/Au/Ca1−xSrxCuO2/YBa2Cu3O7−δ heterostructures have been fabricated and superconducting current has been observed at low temperatures.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2007 |
| Autor(en): | Ovsyannikov, Gennady A. ; Demidov, Viktor V. ; Kislinski, Yuli V. ; Komissinski, Philippe V. ; Winkler, Dag |
| Art des Eintrags: | Bibliographie |
| Titel: | Conductivity and antiferromagnetism of CaCuO2 thin films doped by Sr |
| Sprache: | Englisch |
| Publikationsjahr: | 1 September 2007 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physica C: Superconductivity |
| Jahrgang/Volume einer Zeitschrift: | 460-462 |
| DOI: | 10.1016/j.physc.2007.03.144 |
| Kurzbeschreibung (Abstract): | The results of electrical and magnetic investigations of epitaxial CaxSr1−xCuO2 (CSCO) thin films grown by pulsed laser deposition are presented. The experimental temperature dependence of the CSCO film conductivity at low doping level is well described by the 3-d Mott insulator model over a wide temperature range (4.2–300 K). A deviation from the model with changing of Sr concentration has been observed. The Neel temperature of the films, TN, was determined by electron paramagnetic resonance technique. The comparison of the obtained TN value with the one previously obtained for the CSCO powder sample could be caused by oxygen vacancies in the CSCO films. Nb/Au/Ca1−xSrxCuO2/YBa2Cu3O7−δ heterostructures have been fabricated and superconducting current has been observed at low temperatures. |
| Freie Schlagworte: | Cuprates , Superconductivity; Antiferromagnetic; Electron paramagnetic resonance |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten |
| Hinterlegungsdatum: | 29 Mär 2012 08:43 |
| Letzte Änderung: | 03 Jul 2020 11:30 |
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