Off-diagonal Seebeck effect and anisotropic thermopower in Bi 2 Sr 2 CaCu 2 O 8 thin films

Autor:	Th. Zahner, Johannes D. Pedarnig, S. T. Li, R. Schreiner, R. Roessler, O. Kus, Hans Lengfellner, Dieter Bäuerle, R. Stierstorfer
Rok vydání:	1997
Předmět:	Superconductivity Range (particle radiation) Materials science Condensed matter physics Seebeck coefficient Diagonal Thermoelectric effect General Physics and Astronomy Thin film Anisotropy Epitaxy
Zdroj:	Europhysics Letters (EPL). 40:673-678
ISSN:	1286-4854 0295-5075
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d4f4ad5aa638b1d3b92bc76347a43147 https://doi.org/10.1209/epl/i1997-00521-4 Zobrazit plný text záznamu