Effect of mechanically-applied uniaxial tensile strain on the onset critical temperature of a superconducting bulk Bi2Sr2CaCu2O8+δ

Authors

  • Christian G. Briones ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Takahiro Matsuoka ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Bess G. Singidas ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Francesca Isabel N. de Vera ⋅ PH Institute of Mathematical Sciences and Physics, University of the Philippines Los Baños
  • Roland V. Sarmago ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

We have investigated the effect of uniaxial tensile strain ϵ applied along the in-plane direction on the onset critical temperature of a bulk Bi2Sr2CaCu2O8+δ (Bi-2212). The applied strain is generated using a mechanical strain device that has a built-in strain measurement system. The sample, tensioned at increasing strains, was cooled down to 5 K using an AC electrical transport measurement system, and we examined the resulting resistance vs. temperature plots. We find that the superconducting transition temperature of the bulk Bi-2212 decreased from 73.99 K with no strain to 73.09 K with 0.18% strain. Straining the bulk sample to 0.30%, the limit of the device, ultimately destroyed the superconductivity, and the result was irreversible even after reducing the strain to 0.24%. These observed effects of the applied uniaxial tensile strain on the Tc, onset can be attributed to the formation of microfractures and grain decoupling in the bulk sample.

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Article ID

SPP-2024-PA-07

Section

Poster Session A (Condensed Matter Physics and Materials Science)

Published

2024-06-26

How to Cite

[1]
CG Briones, T Matsuoka, BG Singidas, FIN de Vera, and RV Sarmago, Effect of mechanically-applied uniaxial tensile strain on the onset critical temperature of a superconducting bulk Bi2Sr2CaCu2O8+δ, Proceedings of the Samahang Pisika ng Pilipinas 42, SPP-2024-PA-07 (2024). URL: https://proceedings.spp-online.org/article/view/SPP-2024-PA-07.