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Anomalous photovoltaic effect in Las0.8Sr0.2MnO3 films grown on SrTiO3(001) substrates by laser molecular beam epitaxy
Published online by Cambridge University Press: 13 July 2006
Abstract
Transient laser-induced anomalous photovoltaic effect has
been studied in La0.8Sr0.2MnO3 films grown on the
SrTiO3 (001) substrates by laser molecular beam epitaxy. It is
demonstrated that the signal polarity is reversed when the films are
irradiated through the substrate rather than at the air/film
interface. The microstructures in these films are clarified in terms
of the oriented microdomains with their (101) plane parallel to the
substrate surface, suggesting off-diagonal Seebeck effect plays an
important role for our observation. From the results, we obtain the
anisotropy of the thermoelectric power
$\Delta S=S_{ab}-S_{c}=0.3~\mu$V/K, where Sab
and Sc are the ab-plane and c-axis Seebeck coefficients.
- Type
- Research Article
- Information
- The European Physical Journal - Applied Physics , Volume 35 , Issue 3 , September 2006 , pp. 173 - 176
- Copyright
- © EDP Sciences, 2006
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