Electrical resistivity measurements under high pressure for Nd3.5Sm0.5Ni3O8

Kai Kobayashi; Hiroki Yamamoto; Akitoshi Nakata; Izuru Umehara; Masatomo Uehara

doi:10.56646/jjapcp.6.0_011106

17th Int Conf on High Pressure in Semiconductor Physics (HPSP-17) & Workshop on High Pressure Study on Superconducting (WHS)

Session ID : 011106

DOI https://doi.org/10.56646/jjapcp.6.0_011106

Conference information

Host: HPSP17 & WHS

Name : 17th Int Conf on High Pressure in Semiconductor Physics (HPSP-17) & Workshop on High Pressure Study on Superconducting (WHS)

Location : Tokyo, Japan

Date : August 07, 2016 - August 11, 2016

Electrical resistivity measurements under high pressure for Nd_3.5Sm_0.5Ni₃O₈

Kai Kobayashi, Hiroki Yamamoto, Akitoshi Nakata, Izuru Umehara, Masatomo Uehara

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CONFERENCE PROCEEDINGS OPEN ACCESS

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Abstract

Nd_3.5Sm_0.5Ni₃O₈ is a candidate for high-T_c superconductor, due to the close structural and electrical similarities with high-T_c cuprates. In electrical resistivity measurement, Nd_3.5Sm_0.5Ni₃O₈ shows a semiconducting behavior. However, by intercalation and subsequent deintercalation treatments with sulfur, Nd_3.5Sm_0.5Ni₃O₈ displays metallic behavior down to 20–40 K, followed by the weak semiconducting tendency at lower temperatures. In this study, the electrical resistivity measurements under high pressures up to 2 GPa were performed for a semiconducting sample of Nd_3.5Sm_0.5Ni₃O₈. We discuss the electrical properties of this material, combining the high-pressure resistivity data with measurements on metallic samples at ambient pressure.

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