New superconducting lead cuprates prepared by molecular beam epitaxy

Michio Naito; Shin-ichi Karimoto; Hideki Yamamoto

doi:10.1117/12.397830

6 September 2000 New superconducting lead cuprates prepared by molecular beam epitaxy

Michio Naito, Shin-ichi Karimoto, Hideki Yamamoto

Proceedings Volume 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV; (2000) https://doi.org/10.1117/12.397830
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

In this article we describe the synthesis of a new superconducting lead cuprate PbSr₂CuO_5+(delta )(T_c approximately 40 K) by molecular beam epitaxy (MBE). The new superconductor is the first member of the Pb-12(n-1)n homologous series, which contain a single PbO layer as the charge reservoir block. This material is a thermodynamically quasi-stable phase, and has not been synthesized in bulk. Low-temperature synthesis by MBE and an appropriate choice of substrates were essential to our discovery of the PbSr₂CuO_5+(delta ) superconductor. This work demonstrates that MBE offers a novel synthetic route in the material search for new superconducting cuprates. Furthermore, we are attempting to synthesize higher n members of the Pb-12(n-1)n homologous series, but have encountered limited success partly because the volatility of Pb and PbO_x limits the growth temperature.

Citation Download Citation

Michio Naito, Shin-ichi Karimoto, and Hideki Yamamoto "New superconducting lead cuprates prepared by molecular beam epitaxy", Proc. SPIE 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV, (6 September 2000); https://doi.org/10.1117/12.397830

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