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Reversible shift in the superconducting transition for La1.85Sr0.15CuO4 and BaFe1.8Co0.2As2 using piezoelectric substrates

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arxiv 1007.5454 v1 pith:DDPZDPSB submitted 2010-07-30 cond-mat.supr-con

Reversible shift in the superconducting transition for La1.85Sr0.15CuO4 and BaFe1.8Co0.2As2 using piezoelectric substrates

Sascha Trommler , Ruben H\"uhne , Kazumasa Iida , Patrick Pahlke , Silvia Haindl , Ludwig Schultz , Bernhard Holzapfel This is my paper
classification cond-mat.supr-con
keywords cuo4strainsubstratesbafe1detailfilmspiezoelectricproperties
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The use of piezoelectric substrates enables a dynamic observation of strain dependent properties of functional materials. Based on studies with La1.85Sr0.15CuO4 we extended this approach to the iron arsenic superconductors represented by BaFe2-xCoxAs2 to investigate strain driven changes in detail. We demonstrate that epitaxial thin films can be prepared on (001)Pb(Mg1/3Nb2/3)0.72Ti0.28O3 substrates using pulsed laser deposition. The structural as well as the electric properties of the grown films were characterized in detail. A reversible shift of the superconducting transition of 0.44 K for La1.85Sr0.15CuO4 and 0.2 K for BaFe1.8Co0.2As2 was observed applying a biaxial strain of 0.022% and 0.017% respectively.

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