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Off-diagonal Seebeck effect and anisotropic thermopower in Bi2Sr2CaCu2O8 thin films

  • The anisotropy ΔS of the thermopower in thin films of the high-Tc superconductor Bi2Sr2CaCu2O8 is investigated using off–c-axis epitaxial film growth and the off-diagonal Seebeck effect. The measurements represent a new method for the investigation of anisotropic transport properties in solids, taking advantage of the availability of oriented grown crystalline thin films instead of using bulk crystals. First results for the temperature dependence ΔS(T) in Bi2Sr2CaCu2O8 thin films are presented and described within a two-band model. Subjecting the films to heat treatments in different gases at relatively low temperatures, ΔS could reversibly be changed in a wide range.

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Author:Th Zahner, Rupert SchreinerORCiDGND, R. Stierstorfer, O. Kus, S. T. Li, R. Roessler, J. D. Pedarnig, D. Bäuerle, H. Lengfellner
DOI:https://doi.org/10.1209/epl/i1997-00521-4
Parent Title (English):Europhysics Letters
Publisher:IOP Sciences
Document Type:Article
Language:English
Year of first Publication:1997
Release Date:2023/07/25
Volume:40
Issue:6
First Page:673
Last Page:678
Institutes:Fakultät Angewandte Natur- und Kulturwissenschaften
Fakultät Angewandte Natur- und Kulturwissenschaften / Labor Mikrosensorik
Publication:Externe Publikationen
research focus:Sensorik
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG