Critical temperature enhancement by means of substrate-induced pressure

Joel Perret; J. Fompeyrine; Jeongwoo Seo; E. Machler; Oystein Fischer; Piero Martinoli; Jean-Pierre Locquet

doi:10.1117/12.335902

22 December 1998 Critical temperature enhancement by means of substrate-induced pressure

Joel Perret, J. Fompeyrine, Jeongwoo Seo, E. Machler, Oystein Fischer, Piero Martinoli, Jean-Pierre Locquet

Proceedings Volume 3481, Superconducting and Related Oxides: Physics and Nanoengineering III; (1998) https://doi.org/10.1117/12.335902
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

In the field of high-temperature superconductivity there has been no increase in the critical temperature T_c of bulk compounds since 1993. However, an analysis of the uniaxial strain or pressure derivatives of T_c in the cuprate superconductors allows us to predict that under a compressive epitaxial strain, a large increase of T_c should be possible. We demonstrate the experimental feasibility of this approach for La_2-xSr_xCuO_{4+/- (delta} ) ('214') thin films deposited on (001)-oriented SrLaAlO₄ substrates for different Sr content (0.045 less than or equal to x less than or equal to 0.11). Under epitaxial strain, a large jump of the critical temperature T_c is observed, as well as a drastic change in the resistive behavior from insulating to metallic at low temperatures.

Citation Download Citation

Joel Perret, J. Fompeyrine, Jeongwoo Seo, E. Machler, Oystein Fischer, Piero Martinoli, and Jean-Pierre Locquet "Critical temperature enhancement by means of substrate-induced pressure", Proc. SPIE 3481, Superconducting and Related Oxides: Physics and Nanoengineering III, (22 December 1998); https://doi.org/10.1117/12.335902

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