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Electric-Field-Induced Superconductivity Detected by Magnetization Measurements of an Electric-Double-Layer Capacitor

2011; Physical Society of Japan; Volume: 80; Issue: 2 Linguagem: Inglês

10.1143/jpsj.80.023708

1347-4073

Y. Kasahara, Takahiro Nishijima, Tatsuya Sato, Yuki Takeuchi, Jianting Ye, Hongtao Yuan, Hidekazu Shimotani, Yoshihiro Iwasa,

Inorganic Chemistry and Materials

We report evidence for superconductivity induced by the application of strong electric fields onto the surface of a band insulator, ZrNCl, provided by the observation of a shielding diamagnetic signal. We introduced an electric-double-layer capacitor configuration and in situ magnetization measurements at low temperatures as a method to detect the novel electric-field-induced superconducting state. The results showed excellent agreement with a previous report using a transistor configuration, demonstrating that the present technique is a novel method for investigating the nonequilibrium phase induced by electric fields.