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arXiv · 1002.4672

Signatures of pressure induced superconductivity in insulating Bi2212

T. Cuk·D. A. Zocco·H. Eisaki·V. Struzhkin·M. Grosche·M. B. Maple·Z. -X. Shen
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Abstract

We have performed several high pressure electrical resistance experiments on Bi1.98Sr2.06Y0.68Cu2O8, an insulating parent compound of the high-Tc Bi2212 family of copper oxide superconductors. We find a resistive anomaly, a downturn at low temperature, that onsets with applied pressure in the 20-40 kbar range. Through both resistance and magnetoresistance measurements, we identify this anomaly as a signature of induced superconductivity. Resistance to higher pressures decreases Tc, giving a maximum of 10 K. The higher pressure measurements exhibit a strong sensitivity to the hydrostaticity of the pressure environment. We make comparisons to the pressure induced superconductivity now ubiquitous in the iron arsenides.

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T. Cuk, D. A. Zocco, H. Eisaki, V. Struzhkin, M. Grosche, M. B. Maple, Z. -X. Shen. 2010-02-25. Signatures of pressure induced superconductivity in insulating Bi2212. https://doi.org/10.1103/physrevb.81.184509

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