Krupke, Ralph ; Deutscher, Guy (1999)
Spontaneous and Field Enhanced Sub-Gaps in In-Plane Oriented (100)-Y1-XCaXBa2Cu3O7-Y/ In Tunnel Junctions.
In: Journal of Low Temperature Physics, 117 (3-4)
doi: 10.1023/A:1022527329560
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Tunneling spectroscopy was performed on in-plane oriented (100)-Y 1-X Ca X Ba 2 Cu 3 O 7-Y /In tunnel junctions. For underdoped Y 1 Ba 2 Cu 3 O 7-Y a zero-bias conductance peak (ZBCP) was observed which did not split down to 4.2K. For optimally doped YBCO a splitting of the ZBCP at zero magnetic field was observed below 6K and a large anisotropy of the splitting was observed as a function of field orientation. The splitting of the ZBCP is strong if the magnetic field is applied parallel to the (001) direction and weak if the field is parallel to the (010) or (100) direction. The splitting shows a large magnetic hysteresis if the magnetic field is parallel to the (001) direction. For Ca-doped YBCO no ZBCP was observed. Instead a sub-gap appeared below 10K, which widened if a magnetic field is applied. The data suggests an order parameter with a complex symmetry that depends on temperature, doping level and magnetic field.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 1999 |
| Autor(en): | Krupke, Ralph ; Deutscher, Guy |
| Art des Eintrags: | Bibliographie |
| Titel: | Spontaneous and Field Enhanced Sub-Gaps in In-Plane Oriented (100)-Y1-XCaXBa2Cu3O7-Y/ In Tunnel Junctions |
| Sprache: | Englisch |
| Publikationsjahr: | November 1999 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Low Temperature Physics |
| Jahrgang/Volume einer Zeitschrift: | 117 |
| (Heft-)Nummer: | 3-4 |
| DOI: | 10.1023/A:1022527329560 |
| Kurzbeschreibung (Abstract): | Tunneling spectroscopy was performed on in-plane oriented (100)-Y 1-X Ca X Ba 2 Cu 3 O 7-Y /In tunnel junctions. For underdoped Y 1 Ba 2 Cu 3 O 7-Y a zero-bias conductance peak (ZBCP) was observed which did not split down to 4.2K. For optimally doped YBCO a splitting of the ZBCP at zero magnetic field was observed below 6K and a large anisotropy of the splitting was observed as a function of field orientation. The splitting of the ZBCP is strong if the magnetic field is applied parallel to the (001) direction and weak if the field is parallel to the (010) or (100) direction. The splitting shows a large magnetic hysteresis if the magnetic field is parallel to the (001) direction. For Ca-doped YBCO no ZBCP was observed. Instead a sub-gap appeared below 10K, which widened if a magnetic field is applied. The data suggests an order parameter with a complex symmetry that depends on temperature, doping level and magnetic field. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Molekulare Nanostrukturen 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 08 Nov 2011 14:12 |
| Letzte Änderung: | 05 Mär 2013 09:55 |
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